PREFIX ps: <http://www.wikidata.org/prop/statement/>
PREFIX p: <http://www.wikidata.org/prop/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
SELECT ?year ?country ?countryLabel ( COUNT( ?nobelPrize ) AS ?totalNobelPrizes ) WHERE {
  ?person wdt:P166 ?nobelPrize .
  ?nobelPrize wdt:P279 wd:Q7191 .
  ?person wdt:P27 ?country .
  ?person p:P166 ?awardStatement .
  ?awardStatement ps:P166 ?nobelPrize .
  ?awardStatement pq:P585 ?awardDate .
  BIND( YEAR( ?awardDate ) AS ?year ) .
  OPTIONAL {
    ?country rdfs:label ?countryLabel .
    FILTER ( LANG( ?countryLabel ) = "en" )
  }
}
GROUP BY ?year ?country ?countryLabel
ORDER BY ?year ?countryLabel
LIMIT 100

Got 100 rows and 4 columns, showing the first 5 and last 5 rows below:
| year           | country                                | countryLabel                    | totalNobelPrizes |
| -------------- | -------------------------------------- | ------------------------------- | ---------------- |
| 1901 (xsd:int) | France (wd:Q142)                       | France (en)                     | 3 (xsd:int)      |
| 1901 (xsd:int) | German Empire (wd:Q43287)              | German Empire (en)              | 2 (xsd:int)      |
| 1901 (xsd:int) | Kingdom of Prussia (wd:Q27306)         | Kingdom of Prussia (en)         | 2 (xsd:int)      |
| 1901 (xsd:int) | Kingdom of the Netherlands (wd:Q29999) | Kingdom of the Netherlands (en) | 1 (xsd:int)      |
| 1901 (xsd:int) | Switzerland (wd:Q39)                   | Switzerland (en)                | 1 (xsd:int)      |
| ...            | ...                                    | ...                             | ...              |
| 1917 (xsd:int) | United Kingdom (wd:Q145)               | United Kingdom (en)             | 1 (xsd:int)      |
| 1918 (xsd:int) | German Reich (wd:Q1206012)             | German Reich (en)               | 1 (xsd:int)      |
| 1918 (xsd:int) | Kingdom of Prussia (wd:Q27306)         | Kingdom of Prussia (en)         | 1 (xsd:int)      |
| 1918 (xsd:int) | Weimar Republic (wd:Q41304)            | Weimar Republic (en)            | 1 (xsd:int)      |
| 1919 (xsd:int) | Belgium (wd:Q31)                       | Belgium (en)                    | 1 (xsd:int)      |

The query returns the total number of Nobel Prizes received by individuals from each country for each year, grouped by year and country. The results include the year, country, country label, and the total number of Nobel Prizes awarded to individuals from that country in that year.

[System]
You are a question answering assistant. Your job is to generate a SPARQL query to answer a given user question.

You have access to the following knowledge graphs:
wikidata at https://qlever.cs.uni-freiburg.de/api/wikidata-sebastian

You can use the following SPARQL prefixes implicitly in all functions:
cc: <http://creativecommons.org/ns#
data: <https://www.wikidata.org/wiki/Special:EntityData/
dct: <http://purl.org/dc/terms/
geo: <http://www.opengis.net/ont/geosparql#
geof: <http://www.opengis.net/def/function/geosparql/
imdb: <https://www.imdb.com/
math: <http://www.w3.org/2005/xpath-functions/math#
ontolex: <http://www.w3.org/ns/lemon/ontolex#
owl: <http://www.w3.org/2002/07/owl#
p: <http://www.wikidata.org/prop/
pq: <http://www.wikidata.org/prop/qualifier/
pqn: <http://www.wikidata.org/prop/qualifier/value-normalized/
pqv: <http://www.wikidata.org/prop/qualifier/value/
pr: <http://www.wikidata.org/prop/reference/
prn: <http://www.wikidata.org/prop/reference/value-normalized/
prov: <http://www.w3.org/ns/prov#
prv: <http://www.wikidata.org/prop/reference/value/
ps: <http://www.wikidata.org/prop/statement/
psn: <http://www.wikidata.org/prop/statement/value-normalized/
psv: <http://www.wikidata.org/prop/statement/value/
qfn: <http://qlever.cs.uni-freiburg.de/function#
ql: <http://qlever.cs.uni-freiburg.de/builtin-functions/
rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: <http://www.w3.org/2000/01/rdf-schema#
ref: <http://www.wikidata.org/reference/
s: <http://www.wikidata.org/entity/statement/
schema: <http://schema.org/
skos: <http://www.w3.org/2004/02/skos/core#
v: <http://www.wikidata.org/value/
wd: <http://www.wikidata.org/entity/
wdno: <http://www.wikidata.org/prop/novalue/
wdt: <http://www.wikidata.org/prop/direct/
wdtn: <http://www.wikidata.org/prop/direct-normalized/
wikibase: <http://wikiba.se/ontology#
xsd: <http://www.w3.org/2001/XMLSchema#
foaf: <http://xmlns.com/foaf/0.1/
dc: <http://purl.org/dc/elements/1.1/
gn: <http://www.geonames.org/ontology#
bd: <http://www.bigdata.com/rdf#
hint: <http://www.bigdata.com/queryHints#
qb: <http://purl.org/linked-data/cube#
void: <http://rdfs.org/ns/void#

You should follow a step-by-step approach to generate the SPARQL query:
1. Determine possible entities and properties implied by the user question.
2. Use the functions to search for entities and properties in the knowledge graphs. Where applicable, constrain the searches with already identified entities and properties.
3. Gradually build up the SPARQL query using the identified entities and properties. Start with simple queries and add more complexity as needed. Use the execute function to get feedback on intermediate queries. You can go back and forth between knowledge graph searches and SPARQL query executions to refine the query.
4. Use the answer or cancel function to finalize your answer and stop the generation process.

Additional rules:
1. Explain your thought process before and after each step and function call.
2. Do not assume or make up any entities or properties without verifying them with the knowledge graphs and functions.
3. The SPARQL query should always return the actual identifiers / IRIs of the items in its result. It additionally may return labels or other human-readable information, but they are optional and should be put within optional clauses unless explicitly requested by the user.
4. Do not stop early if there are still obvious improvements to be made to the SPARQL query. For example, keep refining your SPARQL query if its result contains irrelevant items or is missing items you expected.
5. Do not perform additional computation (e.g. filtering, sorting, calculations) on the result of the SPARQL query to determine the answer. All computation should be done solely within SPARQL.
6. For questions with a "True" or "False" answer the SPARQL query should be an ASK query.
7. Do not use 'SERVICE wikibase:label { bd:serviceParam wikibase:language ...' in SPARQL queries. It is not SPARQL standard and unsupported by the used QLever SPARQL endpoints. Use rdfs:label or similar properties to get labels instead.

[User] What is the total number of Nobel Prizes received by individuals from each country for each year, grouped by year and country?

[Assistant]
To answer the question about the total number of Nobel Prizes received by individuals from each country for each year, grouped by year and country, I need to identify the following:

1. The entity representing Nobel Prize.
2. The property that links Nobel Prizes to the recipients (individuals).
3. The property that links individuals to their country of citizenship.
4. The property that indicates the year when the Nobel Prize was awarded.

I will start by searching for the entity representing the Nobel Prize.

[Tool]
Top 10 entity alternatives:
1. Nobel Prize, also known as Nobel (wd:Q7191): set of annual international awards, primarily 5 established in 1895 by Alfred Nobel
2. Nobel prize (wd:Q68617247): scientific article published on 01 October 1970
3. Nobel prize (wd:Q68632222): scientific article published on 01 October 1971
4. Nobel Prize (wd:Q56550587): scientific article published in the British Medical Journal
5. Nobel Prize (wd:Q68562111): scientific article published on 01 October 1966
6. Nobel Prize (wd:Q84949135): scientific article published on 01 October 1964
7. Nobel Prize (wd:Q93856116)
8. Nobel Prize (wd:Q93924922): scientific article published in October 1960
9. NOBEL PRIZE (wd:Q81850411): scientific article published on 01 December 1912
10. Nobel Prize (wd:L1244268-S3)

[Assistant] The entity representing the Nobel Prize is wd:Q7191. Next, I need to find the property that links Nobel Prizes to the recipients (individuals). I will search for properties related to Nobel Prize recipients.

[Tool]
Top 10 property alternatives:
1. Nobel Prize People Nomination ID (wd:P3360 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): identifier for a person who nominated someone, or who was nominated, for a Nobel Prize
2. Nobel Laureate API ID (wd:P8024 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): REST API service with info about Nobel laureates
3. winner, also known as nominee, prizewinner, titleholder, top dog, victor (wd:P1346 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): winner of a competition or similar event, not to be used for awa...ssibly qualified with "for work" (P1686)) or for wars or battles, participating team, participant
4. CIÊNCIAVITAE ID, also known as CIÊNCIA VITAE (wd:P7893 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): identifier of scientific author in www.cienciavitae.pt
5. award received, also known as win, winner of, recognition title, received award, prize received (wd:P166 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): award or recognition received by a person, organization or creative work
6. significant person, also known as significant people, sigper, sign. person, relevant person, relevant people (wd:P3342 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): person linked to the item in any possible way
7. National Science Foundation award, also known as National Science Foundation grant, NSF award, NSF grant (wd:P11858 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): identifier for grants from the United States National Science Foundation
8. The World Academy of Sciences fellow ID, also known as TWAS fellow ID (wd:P6174 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): fellows of The World Academy of Sciences (TWAS)
9. studied in, also known as is studied by, studied by, science, that studies, researched in, researched by (wd:P2579 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): subject is studied by this science or domain, field of work
10. Polish scientist ID, also known as Polish Science scientist ID (wd:P3124 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): identifier for a scientist, in the Polish Government's Information Processing Centre database

[Assistant] The property "award received" (wdt:P166) is used to indicate awards or prizes received by a person. This can be used to link individuals to the Nobel Prize. Next, I need to find the property that links individuals to their country of citizenship. I will search for properties related to country of citizenship.

[Tool]
Top 10 property alternatives:
1. country of citizenship, also known as subject of (country), nation of citizenship, national of, nationality, nation (wd:P27 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): the object is a country that recognizes the subject as its citizen, country
2. place of birth, also known as POB, location of birth, location born, born in, birthplace (wd:P19 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): most specific known birth location of a person, animal or fictional character, location
3. date of birth, also known as year of birth, birthdate, DOB, born on, born (wd:P569 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): date on which the subject was born, inception
4. country for sport, also known as sports nationality, sports country, sport nationality, sporting nationality, sport country (wd:P1532 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): country a person or a team represents when playing a sport, country
5. valid in place, also known as applies to country, applies to location, applies to place, country, true in (wd:P3005 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): place where a statement is valid, applies to part
6. country of origin, also known as origin country, place of origin, originates from, country, CoO (wd:P495 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): country of origin of this item (creative work, food, phrase, product, etc.), significant place, country
7. country, also known as sovereign state, state, land, host country (wd:P17 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): sovereign state that this item is in (not to be used for human beings), located in the administrative territorial entity
8. birth name, also known as née, name at birth, name before marriage, ne, né (wd:P1477 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): full name of a person at birth, if different from their current, generally used name, name
9. permanent resident of, also known as landed immigrant of, PR (wd:P5389 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): country or region where a person has the legal status of permanent resident
10. residence, also known as living in, place of residence, resided at, resided in, resident in (wd:P551 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): the place where the person is or has been, resident, location

[Assistant] The property "country of citizenship" (wdt:P27) is used to indicate the country of citizenship of an individual. Next, I need to find the property that indicates the year when the Nobel Prize was awarded. I will search for properties related to the year or date of the award.

[Tool]
Top 10 property alternatives:
1. award received, also known as win, winner of, recognition title, received award, prize received (wd:P166 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): award or recognition received by a person, organization or creative work
2. awarded for period (wd:P4566 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): period during which the achievement must have been made to be eligible for an award
3. conferred by, also known as presented by, officiated by, issued by, granted by, given by (wd:P1027 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): person or organization who grants an award, certification, grant, or role
4. eligible recipient, also known as eligible recipient for award, type of recipient who is eligible for this award (wd:P8115 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): party that is eligible to receive something, like an award, grant or prize
5. winner, also known as nominee, prizewinner, titleholder, top dog, victor (wd:P1346 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): winner of a competition or similar event, not to be used for awa...ssibly qualified with "for work" (P1686)) or for wars or battles, participating team, participant
6. award rationale, also known as award citation, rationale, award reason (wd:P6208 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): qualifier to add short citation explaining the official reason f... or add comments about a person's award. No quote marked needed.
7. for work, also known as awarded for work, citation for award, for their work on, nominated for work (wd:P1686 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): qualifier of award received (P166) to specify the work that an award was given to the creator for
8. nominated for, also known as nominee for, shortlisted for, selected for award, selected for, nominee for award (wd:P1411 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): award nomination received by a person, organisation or creative work (inspired from "award received" (Property:P166))
9. date of promulgation, also known as enacted date, promulgation date, royal assent, date of assent, date signed (wd:P7589 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): date on which a piece of legislation formally became law (whether by assent or some other procedure), point in time
10. announcement date, also known as released, date teased, made public on, public announcement date, published (wd:P6949 as psv/pqn/prv/wdtn/pr/ps/p/pqv/prn/wdt/psn/pq): time of the first public presentation of a subject by the creator, of information by the media, point in time

[Assistant] The property "award received" (wdt:P166) can have a qualifier "point in time" (wdt:P585) that indicates the date or year when the award was received. I will now construct a SPARQL query to get the total number of Nobel Prizes received by individuals from each country for each year, grouped by year and country.

[Tool]
SPARQL execution failed:
Error while executing a SERVICE request to <http://wikiba.se:80/ontology#label>: SERVICE responded with HTTP status code: 301, Moved Permanently. First 100 bytes of the response: '<html>
<head><title>301 Moved Permanently</title></head>
<body>
<center><h1>301 Moved Permanently'

[Assistant] The query failed because the SERVICE wikibase:label is not supported by the used QLever SPARQL endpoint. I will rewrite the query without using SERVICE wikibase:label and instead use optional clauses to get the country labels.

[Tool] Got no rows and 4 columns

[Assistant] The query returned no results, which might be due to the fact that the Nobel Prize entity (wd:Q7191) is a general class and not the specific award instances. Instead, I will check for the property "award received" (wdt:P166) with the value being specific Nobel Prize awards (instances of Nobel Prize). I will try to find some specific Nobel Prize awards to use in the query.

[Tool]
Top 10 entity alternatives:
1. Nobel Prize awards (wd:Q104774183): 1929 news article in The Times
2. Nobel Prize Awards (wd:Q60074553): scientific article published in Nature
3. Pavlov and the Nobel Prize Award (wd:Q48403942): scientific article published in October 1990
4. Ulcer researchers awarded '05 Nobel Prize (wd:Q17610448): Wikinews article
5. Phage display pioneers awarded Nobel Prize (wd:Q128967462): scholarly article
6. Lasker Award often prologue to Nobel Prize (wd:Q48405858): scientific article published in October 1989
7. Nobel Prize in Chemistry Awarded Women (wd:Q60515255)
8. Virus discoveries awarded with Nobel Prize (wd:Q52356373): scientific article published in October 2008
9. Human genome pioneers are awarded Nobel prize (wd:Q42779986): scientific article published on October 2002
10. HIV discoverers awarded Nobel Prize for medicine (wd:Q48319329): scientific article published in October 2008

[Assistant] The search for specific Nobel Prize awards did not return a clear entity representing individual Nobel Prize awards. I will try a different approach: I will check the property "award received" (wdt:P166) for some individuals who are Nobel laureates to see what values are used for the Nobel Prize awards. I will search for Nobel laureates first.

[Tool]
Top 10 entity alternatives:
1. Nobel Prize winner, also known as Nobel laureate (wd:Q115784320): person who won a nobel prize
2. Nobel laureate address (wd:Q82217916): scientific article published on 01 October 2004
3. Nobel laureate pathologists (wd:Q48315502): scientific article published in January 2009
4. Nobel laureates (wd:Q48370666): scientific article published in January 2001
5. Nobel Laureates (wd:Q58940126): scientific article published in Nature
6. Nobel Laureates (wd:Q60257615): scholarly article
7. Nobel Laureate surgeons (wd:Q40308045): scientific article published on July 2006
8. Alexander Todd--British Nobel laureate (wd:Q41154807): scientific article published on March 2012
9. Australian Nobel Laureates (wd:Q123921837): online exhibition from Australian Science Archives Project
10. Overlooked Nobel laureates. (wd:Q34096922): scientific article

[Assistant] The entity "Nobel Prize winner" or "Nobel laureate" (wd:Q115784320) represents persons who won a Nobel Prize. I will now search for properties of this entity to find the awards they received and the award dates.

[Tool]
Top 10 property alternatives:
1. award received, also known as win, winner of, recognition title, received award, prize received (wd:P166 as p/wdt): award or recognition received by a person, organization or creative work
2. instance of, also known as unitary element of class, has type, unique individual of, type, item of type (wd:P31 as p/wdt): that class of which this subject is a particular example and mem...is a subclass of mountain (and an instance of volcanic landform)
3. topic's main category, also known as article's main category, category, category for this topic, catmain, has category (wd:P910 as p/wdt): main Wikimedia category
4. subclass of, also known as rdfs:subClassOf, sort of, subcategory of, subgenre of, subtype of (wd:P279 as p/wdt): this item is a subclass (subset) of that item; ALL instances of ...stance of volcanic landform); Everest is an instance of mountain
5. Wikidata property, also known as main property, property for this item, property, has property (wd:P1687 as p/wdt): main Wikidata property for this item
6. has list, also known as list, topic's list, topic list, related list, list for this topic (wd:P2354 as p/wdt): Wikimedia list related to this subject
7. GND ID, also known as Deutschen Nationalbibliothek ID, Universal Authority File, Integrated Authority File, IndividualisedGnd, GND-IDN (wd:P227 as p/wdt/wdtn): identifier from an international authority file of names, subjects, and organizations
8. male form of label, also known as male form of label (string), male gender sense, masculine form of label (wd:P3321 as p/wdt): male form of name or title (for female use P2521)

No other items found

[Assistant] The property "award received" (wdt:P166) is confirmed to be used for Nobel laureates to indicate the awards they received. I will now check the qualifiers of the "award received" property for a Nobel laureate to find the award date property. I will pick a known Nobel laureate to inspect. I will search for a Nobel laureate person.

[Tool]
Top 10 entity alternatives:
1. Albert Einstein (wd:Q937): German-born theoretical physicist (1879–1955), physicist
2. Albert Einstein (wd:Q21200226): Wikimedia permanent duplicate item
3. Albert Einstein (wd:Q13426745): 2013 studio album by Prodigy and The Alchemist
4. Albert Einstein (wd:Q2253683): train service
5. Albert Einstein (wd:Q20133967): human settlement in Mexico
6. Albert Einstein (wd:Q117327908): Bust of Albert Einstein at the Middle East Technical University
7. Albert Einstein (wd:Q55333079): 1989 television film directed by Georg Schiemann
8. Albert Einstein (wd:Q117354302): etching by Henrik Lund
9. Albert Einstein (wd:Q113663954)
10. Albert Einstein (wd:Q107448809): painting by Erich Büttner

[Assistant] I found the entity for Albert Einstein (wd:Q937). I will now list the statements for the property "award received" (wdt:P166) for Albert Einstein to check the qualifiers for the award date.

[Tool]
Got 20 rows and 3 columns, showing the first 10 rows below:
| subject                   | property                  | object                                                        |
| ------------------------- | ------------------------- | ------------------------------------------------------------- |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Nobel Prize in Physics (wd:Q38104)                            |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Copley Medal (wd:Q28003)                                      |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Pour le Mérite (wd:Q156478)                                   |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Max Planck Medal (wd:Q317038)                                 |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Gold Medal of the Royal Astronomical Society (wd:Q753072)     |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Matteucci Medal (wd:Q1419938)                                 |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Prix Jules Janssen (wd:Q1711648)                              |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Franklin Medal (wd:Q3141777)                                  |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Barnard Medal for Meritorious Service to Science (wd:Q808424) |
| Albert Einstein (wd:Q937) | award received (wdt:P166) | Josiah Willard Gibbs Lectureship (wd:Q1522873)                |
| ...                       | ...                       | ...                                                           |

[Assistant] Albert Einstein received the Nobel Prize in Physics (wd:Q38104). I will now list the statements for the property "award received" (P166) for Albert Einstein with qualifiers to check the award date.

[Tool]
Got 20 rows and 3 columns, showing the first 10 rows below:
| subject                   | property                | object                                      |
| ------------------------- | ----------------------- | ------------------------------------------- |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:q937-000BA6F7-4B85-47CA-ACF6-89590095E5E4 |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:Q937-1D4DBBB0-E023-4F6C-9B88-4C38DB0CC289 |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:Q937-2323D34A-12CA-41D9-8B48-A6AF21145A5B |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:Q937-24c2aaa7-4417-8642-9e39-61d25e275787 |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:Q937-2870b88e-4ae5-3ec2-52d0-4d20cc7f10c8 |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:q937-4325B997-108F-4715-931E-005AC54CEAFB |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:Q937-65aa4447-439c-0e46-3c61-717c07fa290e |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:q937-67E83EE7-ED3E-44D3-9989-9792CEC63F63 |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:q937-70EC89C2-21BF-486F-A1A1-0EFC53D8F358 |
| Albert Einstein (wd:Q937) | award received (p:P166) | s:q937-734E469F-1D50-4391-A16E-0E9C2F478D6B |
| ...                       | ...                     | ...                                         |

[Assistant] The property p:P166 has statement nodes for each award received by Albert Einstein. I will now check the qualifiers of one of these statement nodes to find the award date property. I will pick the first statement node s:q937-000BA6F7-4B85-47CA-ACF6-89590095E5E4.

[Tool]
Got 6 rows and 3 columns:
| subject                                     | property                 | object                              |
| ------------------------------------------- | ------------------------ | ----------------------------------- |
| s:q937-000BA6F7-4B85-47CA-ACF6-89590095E5E4 | award received (ps:P166) | Matteucci Medal (wd:Q1419938)       |
| s:q937-000BA6F7-4B85-47CA-ACF6-89590095E5E4 | point in time (pq:P585)  | 1921-01-01T00:00:00Z (xsd:dateTime) |
| s:q937-000BA6F7-4B85-47CA-ACF6-89590095E5E4 | wikibase:rank            | wikibase:NormalRank                 |
| s:q937-000BA6F7-4B85-47CA-ACF6-89590095E5E4 | rdf:type                 | wikibase:BestRank                   |
| s:q937-000BA6F7-4B85-47CA-ACF6-89590095E5E4 | point in time (pqv:P585) | v:b055cd58e2c0252e4fcd36fe6baf17b0  |
| s:q937-000BA6F7-4B85-47CA-ACF6-89590095E5E4 | rdf:type                 | wikibase:Statement                  |

[Assistant] The qualifier "point in time" (pq:P585) indicates the date when the award was received. I will now construct a SPARQL query to get the total number of Nobel Prizes received by individuals from each country for each year, grouped by year and country, using the property "award received" (wdt:P166) with qualifier "point in time" (pq:P585) and filtering for Nobel Prize awards (instances of wd:Q7191).

[Tool] Got no rows and 4 columns

[Assistant] The query returned no results again. It might be that the specific Nobel Prize awards are not directly instances of wd:Q7191. I will check the instance of (wdt:P31) for the Nobel Prize in Physics (wd:Q38104) to see its classification.

[Tool]
Got 2 rows and 3 columns:
| subject                            | property              | object                        |
| ---------------------------------- | --------------------- | ----------------------------- |
| Nobel Prize in Physics (wd:Q38104) | instance of (wdt:P31) | physics award (wd:Q107494520) |
| Nobel Prize in Physics (wd:Q38104) | instance of (wdt:P31) | science award (wd:Q11448906)  |

[Assistant] The Nobel Prize in Physics (wd:Q38104) is an instance of physics award (wd:Q107494520) and science award (wd:Q11448906), but not directly an instance of Nobel Prize (wd:Q7191). I will check if it is a subclass of Nobel Prize (wd:Q7191).

[Tool]
Got 1 row and 3 columns:
| subject                            | property               | object                 |
| ---------------------------------- | ---------------------- | ---------------------- |
| Nobel Prize in Physics (wd:Q38104) | subclass of (wdt:P279) | Nobel Prize (wd:Q7191) |

[Assistant] The Nobel Prize in Physics (wd:Q38104) is a subclass of Nobel Prize (wd:Q7191). I will modify the query to check if the Nobel Prize awards are subclasses of Nobel Prize (wd:Q7191) instead of instances.

[Tool]
Got 100 rows and 4 columns, showing the first 5 and last 5 rows below:
| year           | country                                | countryLabel                    | totalNobelPrizes |
| -------------- | -------------------------------------- | ------------------------------- | ---------------- |
| 1901 (xsd:int) | France (wd:Q142)                       | France (en)                     | 3 (xsd:int)      |
| 1901 (xsd:int) | German Empire (wd:Q43287)              | German Empire (en)              | 2 (xsd:int)      |
| 1901 (xsd:int) | Kingdom of Prussia (wd:Q27306)         | Kingdom of Prussia (en)         | 2 (xsd:int)      |
| 1901 (xsd:int) | Kingdom of the Netherlands (wd:Q29999) | Kingdom of the Netherlands (en) | 1 (xsd:int)      |
| 1901 (xsd:int) | Switzerland (wd:Q39)                   | Switzerland (en)                | 1 (xsd:int)      |
| ...            | ...                                    | ...                             | ...              |
| 1917 (xsd:int) | United Kingdom (wd:Q145)               | United Kingdom (en)             | 1 (xsd:int)      |
| 1918 (xsd:int) | German Reich (wd:Q1206012)             | German Reich (en)               | 1 (xsd:int)      |
| 1918 (xsd:int) | Kingdom of Prussia (wd:Q27306)         | Kingdom of Prussia (en)         | 1 (xsd:int)      |
| 1918 (xsd:int) | Weimar Republic (wd:Q41304)            | Weimar Republic (en)            | 1 (xsd:int)      |
| 1919 (xsd:int) | Belgium (wd:Q31)                       | Belgium (en)                    | 1 (xsd:int)      |

[Tool] Stopped generation process

[User]
Feedback (status=done):
The SPARQL query correctly retrieves the total number of Nobel Prizes received by individuals from each country for each year, grouped by year and country. It uses appropriate properties to link persons to their Nobel Prizes, filters for Nobel Prize subclasses, extracts the award year, and groups the results accordingly. The query also optionally retrieves English labels for countries, which is helpful for readability. The execution result shows plausible data with counts per country and year. Overall, the output is correct and complete for the user's question.


PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
SELECT ?place ?placeLabel ?coordinates WHERE {
  ?place wdt:P17 wd:Q159 ; rdfs:label ?placeLabel ; wdt:P625 ?coordinates ; wdt:P31 ?type .
  FILTER ( LANG( ?placeLabel ) = "en" ) FILTER ( STRENDS( ?placeLabel , "pol" ) ) FILTER ( ?type IN ( wd:Q515 , wd:Q3957 , wd:Q7930989 ) )
}

The cities in Russia whose English names end with "pol" along with their coordinates are:
1. Andreapol (wd:Q103604) - Coordinates: POINT(32.266667 56.650000)
2. Kargopol (wd:Q145261) - Coordinates: POINT(38.933333 61.500000)
3. Simferopol (wd:Q19566) - Coordinates: POINT(34.100039 44.948376)
4. Stavropol (wd:Q5206) - Coordinates: POINT(41.983333 45.050000)

[System]
You are a question answering assistant. Your job is to generate a SPARQL query to answer a given user question.

You have access to the following knowledge graphs:
wikidata at https://qlever.cs.uni-freiburg.de/api/wikidata-sebastian

You can use the following SPARQL prefixes implicitly in all functions:
cc: <http://creativecommons.org/ns#
data: <https://www.wikidata.org/wiki/Special:EntityData/
dct: <http://purl.org/dc/terms/
geo: <http://www.opengis.net/ont/geosparql#
geof: <http://www.opengis.net/def/function/geosparql/
imdb: <https://www.imdb.com/
math: <http://www.w3.org/2005/xpath-functions/math#
ontolex: <http://www.w3.org/ns/lemon/ontolex#
owl: <http://www.w3.org/2002/07/owl#
p: <http://www.wikidata.org/prop/
pq: <http://www.wikidata.org/prop/qualifier/
pqn: <http://www.wikidata.org/prop/qualifier/value-normalized/
pqv: <http://www.wikidata.org/prop/qualifier/value/
pr: <http://www.wikidata.org/prop/reference/
prn: <http://www.wikidata.org/prop/reference/value-normalized/
prov: <http://www.w3.org/ns/prov#
prv: <http://www.wikidata.org/prop/reference/value/
ps: <http://www.wikidata.org/prop/statement/
psn: <http://www.wikidata.org/prop/statement/value-normalized/
psv: <http://www.wikidata.org/prop/statement/value/
qfn: <http://qlever.cs.uni-freiburg.de/function#
ql: <http://qlever.cs.uni-freiburg.de/builtin-functions/
rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: <http://www.w3.org/2000/01/rdf-schema#
ref: <http://www.wikidata.org/reference/
s: <http://www.wikidata.org/entity/statement/
schema: <http://schema.org/
skos: <http://www.w3.org/2004/02/skos/core#
v: <http://www.wikidata.org/value/
wd: <http://www.wikidata.org/entity/
wdno: <http://www.wikidata.org/prop/novalue/
wdt: <http://www.wikidata.org/prop/direct/
wdtn: <http://www.wikidata.org/prop/direct-normalized/
wikibase: <http://wikiba.se/ontology#
xsd: <http://www.w3.org/2001/XMLSchema#
foaf: <http://xmlns.com/foaf/0.1/
dc: <http://purl.org/dc/elements/1.1/
gn: <http://www.geonames.org/ontology#
bd: <http://www.bigdata.com/rdf#
hint: <http://www.bigdata.com/queryHints#
qb: <http://purl.org/linked-data/cube#
void: <http://rdfs.org/ns/void#

You should follow a step-by-step approach to generate the SPARQL query:
1. Determine possible entities and properties implied by the user question.
2. Use the functions to search for entities and properties in the knowledge graphs. Where applicable, constrain the searches with already identified entities and properties.
3. Gradually build up the SPARQL query using the identified entities and properties. Start with simple queries and add more complexity as needed. Use the execute function to get feedback on intermediate queries. You can go back and forth between knowledge graph searches and SPARQL query executions to refine the query.
4. Use the answer or cancel function to finalize your answer and stop the generation process.

Additional rules:
1. Explain your thought process before and after each step and function call.
2. Do not assume or make up any entities or properties without verifying them with the knowledge graphs and functions.
3. The SPARQL query should always return the actual identifiers / IRIs of the items in its result. It additionally may return labels or other human-readable information, but they are optional and should be put within optional clauses unless explicitly requested by the user.
4. Do not stop early if there are still obvious improvements to be made to the SPARQL query. For example, keep refining your SPARQL query if its result contains irrelevant items or is missing items you expected.
5. Do not perform additional computation (e.g. filtering, sorting, calculations) on the result of the SPARQL query to determine the answer. All computation should be done solely within SPARQL.
6. For questions with a "True" or "False" answer the SPARQL query should be an ASK query.
7. Do not use 'SERVICE wikibase:label { bd:serviceParam wikibase:language ...' in SPARQL queries. It is not SPARQL standard and unsupported by the used QLever SPARQL endpoints. Use rdfs:label or similar properties to get labels instead.

[User] What are the cities in Russia whose English names end with "pol", along with their coordinates? Please include the item ID and the item label (in English).

[Assistant]
To answer this question, I need to find cities in Russia with English names ending with "pol" and retrieve their coordinates, item IDs, and English labels.

Step 1: Identify the entity for Russia.
Step 2: Identify the entity type for cities.
Step 3: Find cities in Russia.
Step 4: Filter cities whose English names end with "pol".
Step 5: Retrieve coordinates, item IDs, and English labels.

I will start by searching for the entity for Russia.

[Tool]
Top 10 entity alternatives:
1. Russia, also known as Russian Federation, RUS, RU, RF, ISO 3166-1:RU (wd:Q159): country in Eastern Europe and Northern Asia
2. Russian Empire, also known as Tsarist Russia, Russia or Moscovy, Russia, Rusia, Rossia (wd:Q34266): former empire in Eurasia and North America (1721–1917)
3. Russia, also known as Russia, OH (wd:Q2477732): town in Ohio
4. Russia, also known as Russia, NY (wd:Q3708651): town in New York
5. Russia (wd:Q4339657): annual international documentary film festival in Yekaterinburg
6. Russia in the Junior Eurovision Song Contest 2006, also known as Russia (wd:Q12739658)
7. Intelligence and Security Committee Russia report, also known as The Russia report, Russia Report, Russia (wd:Q97577701): UK government investigation into allegations of Russian interference in British politics
8. Russia (wd:Q19149694): poem by Alexander Blok
9. Russia, also known as Russia, New Jersey, Russia, NJ (wd:Q20657737): township in Morris County, New Jersey
10. Russia, also known as Rossiya (wd:Q109806507): cast iron sculpture by Nikolay Laveretsky

[Assistant]
The entity for Russia is wd:Q159.

Next, I will identify the entity type for cities. Usually, cities are instances of "city" (wd:Q515) or subclasses of it. I will verify this by searching for the entity "city".

[Tool]
Top 10 entity alternatives:
1. city, also known as cities (wd:Q515): large human settlement
2. Manchester City F.C., also known as The Sky Blues, City, The Citizens, The Blues, Sky Blues (wd:Q50602): association football club in Manchester, England
3. Leicester City F.C., also known as The Foxes, Leicester Fosse Football Club, Leicester Fosse FC, Leicester Fosse, Leicester City (wd:Q19481): association football club in Leicester, England
4. Swansea City A.F.C., also known as Swansea City Association Football Club, The Swans, The Jacks, Swansea City AFC, Swansea City (wd:Q18659): association football club in Swansea, Wales
5. Stoke City F.C., also known as City, SCFC, Stoke, Stoke City, Stoke City FC (wd:Q18736): association football club in Stoke-on-Trent, England
6. Birmingham City F.C., also known as BCFC, City, Blues, Birmingham City Football Club, Birmingham City (wd:Q19444): association football club in Birmingham, England
7. Norwich City F.C., also known as Norwich City FC, The Canaries, Norwich City Football Club, Norwich City, Norwich (wd:Q18721): association football club in Norwich, England
8. Cardiff City F.C., also known as Cardiff, The Bluebirds, City, CCFC, Cardiff City Football Club (wd:Q18662): association football club in Cardiff, Wales
9. Hull City A.F.C., also known as City, HCAFC, Hull, Hull City, Hull City AFC (wd:Q19477): association football club in Hull, England
10. Coventry City F.C., also known as Coventry City FC, Sky Blues, Coventry City Football Club, Coventry City, Coventry (wd:Q19580): association football club in Coventry, England

[Assistant]
The entity for city is wd:Q515.

Now, I will write a SPARQL query to find cities (wd:Q515) in Russia (wd:Q159) whose English labels end with "pol". I will also retrieve their coordinates (P625), item IDs, and English labels.

I will execute this query next.

[Tool] Got no rows and 3 columns

[Assistant]
The query returned no results, which means there might be no cities in Russia with English names ending exactly with "pol" or the instance of city (wd:Q515) might be too restrictive.

I will try to relax the instance condition to include subclasses of city or populated places. I will search for entities that are subclasses of city or related to populated places in Russia and check if any have names ending with "pol".

First, I will search for entities with "pol" in their English label in Russia to see if there are any relevant places.

[Tool]
Got 20 rows and 2 columns, showing the first 5 and last 5 rows below:
| place                                             | placeLabel                                 |
| ------------------------------------------------- | ------------------------------------------ |
| politika-crimea.ru person ID (wd:P10162)          | politika-crimea.ru person ID (en)          |
| Russian Trampoline Federation ID (wd:P11009)      | Russian Trampoline Federation ID (en)      |
| Crimean virtual necropolis persons ID (wd:P11679) | Crimean virtual necropolis persons ID (en) |
| Polezhaev Revenue House (wd:Q100708769)           | Polezhaev Revenue House (en)               |
| economy of Simferopol (wd:Q100868435)             | economy of Simferopol (en)                 |
| ...                                               | ...                                        |
| Road Saky Sevastopol (wd:Q104535948)              | Road Saky Sevastopol (en)                  |
| Khabarova Polar Station (wd:Q104864558)           | Khabarova Polar Station (en)               |
| Zubovo-Polyansky District (wd:Q1049529)           | Zubovo-Polyansky District (en)             |
| Zelyonaya Polyana (wd:Q1050080)                   | Zelyonaya Polyana (en)                     |
| Shukhov tower in Polibino (wd:Q10511094)          | Shukhov tower in Polibino (en)             |

[Assistant]
There are some places with names containing "pol" but not necessarily ending with "pol". I see "Simferopol" in the results, which is a city in Russia and ends with "pol".

I will now refine the query to specifically look for cities or populated places in Russia whose English names end with "pol". I will include instance of city (wd:Q515) or instance of populated place (wd:Q486972) to cover more cases.

I will also retrieve their coordinates, item IDs, and English labels.

[Tool] Got no rows and 3 columns

[Assistant]
The query returned no results again. It seems that the property P31 (instance of) might not be consistently used or the places ending with "pol" are not directly instances of city or populated place.

I will try a different approach: I will search for places in Russia with English names ending with "pol" without restricting the instance type, and retrieve their coordinates, item IDs, and English labels. This will help identify if such places exist and their types.

[Tool]
Got 134 rows and 3 columns, showing the first 5 and last 5 rows below:
| place                                                                   | placeLabel                                                    | coordinates                                 |
| ----------------------------------------------------------------------- | ------------------------------------------------------------- | ------------------------------------------- |
| Andreapol (wd:Q103604)                                                  | Andreapol (en)                                                | POINT(32.266667 56.650000) (geo:wktLiteral) |
| Sukhopol (wd:Q1052079)                                                  | Sukhopol (en)                                                 | POINT(56.899167 54.551389) (geo:wktLiteral) |
| Wager house, Kargopol (wd:Q105776324)                                   | Wager house, Kargopol (en)                                    | POINT(38.941102 61.499951) (geo:wktLiteral) |
| Bell Tower of the Nativity Cathedral, Kargopol (wd:Q105776504)          | Bell Tower of the Nativity Cathedral, Kargopol (en)           | POINT(38.948620 61.503610) (geo:wktLiteral) |
| Sergiopol (wd:Q1060760)                                                 | Sergiopol (en)                                                | POINT(54.938056 54.213056) (geo:wktLiteral) |
| ...                                                                     | ...                                                           | ...                                         |
| House in memory of 1905 in Simferopol (wd:Q96482512)                    | House in memory of 1905 in Simferopol (en)                    | POINT(34.089262 44.958962) (geo:wktLiteral) |
| Alley of children-heroes, Simferopol (wd:Q96625537)                     | Alley of children-heroes, Simferopol (en)                     | POINT(34.110208 44.955879) (geo:wktLiteral) |
| Monument to children who died in 1941-1945 in Simferopol (wd:Q96756715) | Monument to children who died in 1941-1945 in Simferopol (en) | POINT(34.097300 44.946900) (geo:wktLiteral) |
| Museum Underground Sevastopol (wd:Q97314260)                            | Museum Underground Sevastopol (en)                            | POINT(33.526944 44.606111) (geo:wktLiteral) |
| Statue of Konstantin Trenyov in Simferopol (wd:Q99534359)               | Statue of Konstantin Trenyov in Simferopol (en)               | POINT(34.098145 44.946234) (geo:wktLiteral) |

[Assistant]
There are places in Russia with English names ending with "pol". However, some results are not cities but specific buildings or monuments (e.g., "Wager house, Kargopol", "Bell Tower of the Nativity Cathedral, Kargopol").

I will refine the query to exclude such specific buildings or monuments by filtering for places that are instances of city (wd:Q515) or town (wd:Q3957), which are more likely to be cities.

I will execute this refined query next.

[Tool] Got no rows and 3 columns

[Assistant]
The query returned no results for cities or towns in Russia with English names ending with "pol". This suggests that the places with names ending in "pol" in Russia might not be classified as cities or towns in Wikidata.

I will now check the types of some places with names ending in "pol" to understand their classification better. I will pick a few places from the previous results and check their instance of (P31) values.

[Tool]
Got 335 rows and 3 columns, showing the first 10 rows below:
| subject                | property                                                    | object                                                                                |
| ---------------------- | ----------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Andreapol (wd:Q103604) | instance of (wdt:P31)                                       | city or town (wd:Q7930989)                                                                                |
| Andreapol (wd:Q103604) | country (wdt:P17)                                           | Russia (wd:Q159)                                                                                |
| Andreapol (wd:Q103604) | located in the administrative territorial entity (wdt:P131) | wd:Q20659041                                                                                |
| Andreapol (wd:Q103604) | coordinate location (wdt:P625)                              | POINT(32.266667 56.650000) (geo:wktLiteral)                                                                                |
| Andreapol (wd:Q103604) | Commons category (wdt:P373)                                 | Andreapol                                                                                |
| Andreapol (wd:Q103604) | image (wdt:P18)                                             | <http://commons.wikimedia.org/wiki/Special:FilePath/%D0%90%D0%BD%D0%B4%D1%80%D0%B5%D0%B0%D0%BF%D0%BE%D0%BB%D1%8C%2C%20%D0%B6%D0%B5%D0%BB%D0%B5%D0%B7%D0%BD%D0%BE%D0%B4%D0%BE%D1%80%D0%BE%D0%B6%D0%BD%D1%8B%D0%B9%20%D0%B2%D0%BE%D0%BA%D0%B7%D0%B0%D0%BB%202020-07-26.jpg> |
| Andreapol (wd:Q103604) | population (wdt:P1082)                                      | 6956 (xsd:decimal)                                                                                |
| Andreapol (wd:Q103604) | inception (wdt:P571)                                        | 1907-01-01T00:00:00Z (xsd:dateTime)                                                                                |
| Andreapol (wd:Q103604) | described by source (wdt:P1343)                             | Brockhaus and Efron Encyclopedic Dictionary (wd:Q602358)                                                                                |
| Andreapol (wd:Q103604) | official website (wdt:P856)                                 | <http://www.andreapol.ru>                                                                                |
| ...                    | ...                                                         | ...                                                                                |

[Assistant]
The place Andreapol (wd:Q103604) is classified as "city or town" (wd:Q7930989), which is a subclass of city or town.

I will now modify the query to include places that are instances of "city or town" (wd:Q7930989) in addition to city (wd:Q515) and town (wd:Q3957).

I will execute this updated query next.

[Tool]
Got 4 rows and 3 columns:
| place                  | placeLabel      | coordinates                                 |
| ---------------------- | --------------- | ------------------------------------------- |
| Andreapol (wd:Q103604) | Andreapol (en)  | POINT(32.266667 56.650000) (geo:wktLiteral) |
| Kargopol (wd:Q145261)  | Kargopol (en)   | POINT(38.933333 61.500000) (geo:wktLiteral) |
| Simferopol (wd:Q19566) | Simferopol (en) | POINT(34.100039 44.948376) (geo:wktLiteral) |
| Stavropol (wd:Q5206)   | Stavropol (en)  | POINT(41.983333 45.050000) (geo:wktLiteral) |

[Tool] Stopped generation process

[User]
Feedback (status=done):
The SPARQL query correctly retrieves cities in Russia whose English labels end with 'pol', including their item IDs, English labels, and coordinates. The use of FILTER with STRENDS on the English label ensures the name ends with 'pol'. The query also correctly restricts the places to instances of city, town, or city or town, and ensures the country is Russia. The results are accurate and complete as per the question. No further refinement is necessary.


PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
SELECT ?event ?eventLabel ?tournament ?tournamentLabel ?year ?country ?countryLabel ?surface ?surfaceLabel ?prizeMoney ?participants WHERE {
  ?event wdt:P1346 wd:Q182736 ; wdt:P361 ?tournament .
  OPTIONAL {
    ?event wdt:P585 ?date .
    BIND( YEAR( ?date ) AS ?year )
  }
  OPTIONAL {
    ?event wdt:P17 ?country .
    OPTIONAL {
      ?country rdfs:label ?countryLabel FILTER ( LANG( ?countryLabel ) = "en" )
    }
  }
  OPTIONAL {
    ?event wdt:P765 ?surface .
  }
  OPTIONAL {
    ?tournament wdt:P765 ?surface .
  }
  OPTIONAL {
    ?event wdt:P2121 ?prizeMoney .
  }
  OPTIONAL {
    ?event wdt:P1132 ?participants .
  }
  OPTIONAL {
    ?event rdfs:label ?eventLabel FILTER ( LANG( ?eventLabel ) = "en" )
  }
  OPTIONAL {
    ?tournament rdfs:label ?tournamentLabel FILTER ( LANG( ?tournamentLabel ) = "en" )
  }
}
ORDER BY DESC ( ?year )

This refined query retrieves events won by Ivan Lendl with mandatory tournament information, extracts the year from the date, queries country, surface (from both event and tournament), prize money, and number of participants where available. Results are ordered by year descending for readability.

[System]
You are a question answering assistant. Your job is to generate a SPARQL query to answer a given user question.

You have access to the following knowledge graphs:
wikidata at https://qlever.cs.uni-freiburg.de/api/wikidata-sebastian

You can use the following SPARQL prefixes implicitly in all functions:
cc: <http://creativecommons.org/ns#
data: <https://www.wikidata.org/wiki/Special:EntityData/
dct: <http://purl.org/dc/terms/
geo: <http://www.opengis.net/ont/geosparql#
geof: <http://www.opengis.net/def/function/geosparql/
imdb: <https://www.imdb.com/
math: <http://www.w3.org/2005/xpath-functions/math#
ontolex: <http://www.w3.org/ns/lemon/ontolex#
owl: <http://www.w3.org/2002/07/owl#
p: <http://www.wikidata.org/prop/
pq: <http://www.wikidata.org/prop/qualifier/
pqn: <http://www.wikidata.org/prop/qualifier/value-normalized/
pqv: <http://www.wikidata.org/prop/qualifier/value/
pr: <http://www.wikidata.org/prop/reference/
prn: <http://www.wikidata.org/prop/reference/value-normalized/
prov: <http://www.w3.org/ns/prov#
prv: <http://www.wikidata.org/prop/reference/value/
ps: <http://www.wikidata.org/prop/statement/
psn: <http://www.wikidata.org/prop/statement/value-normalized/
psv: <http://www.wikidata.org/prop/statement/value/
qfn: <http://qlever.cs.uni-freiburg.de/function#
ql: <http://qlever.cs.uni-freiburg.de/builtin-functions/
rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: <http://www.w3.org/2000/01/rdf-schema#
ref: <http://www.wikidata.org/reference/
s: <http://www.wikidata.org/entity/statement/
schema: <http://schema.org/
skos: <http://www.w3.org/2004/02/skos/core#
v: <http://www.wikidata.org/value/
wd: <http://www.wikidata.org/entity/
wdno: <http://www.wikidata.org/prop/novalue/
wdt: <http://www.wikidata.org/prop/direct/
wdtn: <http://www.wikidata.org/prop/direct-normalized/
wikibase: <http://wikiba.se/ontology#
xsd: <http://www.w3.org/2001/XMLSchema#
foaf: <http://xmlns.com/foaf/0.1/
dc: <http://purl.org/dc/elements/1.1/
gn: <http://www.geonames.org/ontology#
bd: <http://www.bigdata.com/rdf#
hint: <http://www.bigdata.com/queryHints#
qb: <http://purl.org/linked-data/cube#
void: <http://rdfs.org/ns/void#

You should follow a step-by-step approach to generate the SPARQL query:
1. Determine possible entities and properties implied by the user question.
2. Use the functions to search for entities and properties in the knowledge graphs. Where applicable, constrain the searches with already identified entities and properties.
3. Gradually build up the SPARQL query using the identified entities and properties. Start with simple queries and add more complexity as needed. Use the execute function to get feedback on intermediate queries. You can go back and forth between knowledge graph searches and SPARQL query executions to refine the query.
4. Use the answer or cancel function to finalize your answer and stop the generation process.

Additional rules:
1. Explain your thought process before and after each step and function call.
2. Do not assume or make up any entities or properties without verifying them with the knowledge graphs and functions.
3. The SPARQL query should always return the actual identifiers / IRIs of the items in its result. It additionally may return labels or other human-readable information, but they are optional and should be put within optional clauses unless explicitly requested by the user.
4. Do not stop early if there are still obvious improvements to be made to the SPARQL query. For example, keep refining your SPARQL query if its result contains irrelevant items or is missing items you expected.
5. Do not perform additional computation (e.g. filtering, sorting, calculations) on the result of the SPARQL query to determine the answer. All computation should be done solely within SPARQL.
6. For questions with a "True" or "False" answer the SPARQL query should be an ASK query.
7. Do not use 'SERVICE wikibase:label { bd:serviceParam wikibase:language ...' in SPARQL queries. It is not SPARQL standard and unsupported by the used QLever SPARQL endpoints. Use rdfs:label or similar properties to get labels instead.

[User] What are the events won by the Czech-American tennis player Ivan Lendl, as well as tournament, year, country, surface played on, prize money, and number of participants (all if available)?

[Assistant]
To answer this question, I need to identify the entity for Ivan Lendl in Wikidata. Then I will look for the events he won and gather information about each event, including the tournament, year, country, surface played on, prize money, and number of participants if available.

Step 1: Search for the entity "Ivan Lendl" in Wikidata.

[Tool]
Top 10 entity alternatives:
1. Ivan Lendl (wd:Q182736): Czech-American tennis player, art collector, tennis player, tennis coach, golfer
2. Ivan Lendl career statistics (wd:Q6096799): tennis player career statistics
3. Tsar Bomba, also known as AN602, Czar Bomb, Ivan, RDS 220, RDS-220 (wd:Q188596): hydrogen aerial bomb tested in 1961 by the Soviet Union; most powerful nuclear weapon ever created
4. Ivaň (wd:Q1282197): village in Prostějov District of Olomouc region
5. Duško Popov, also known as Ivan, Tricycle (wd:Q2409128): Serbian double agent (1912–1981), double agent, socialite
6. Hurricane Ivan, also known as Ivan (wd:Q933067): Category 5 Atlantic hurricane in 2004
7. Ivan, also known as Ivan (given name), Ivan (Latin script), Ivan (first name) (wd:Q830350): male given name
8. Ivaň (wd:Q1675716): village in Brno-venkov District of South Moravian region
9. Alexander Ivanov, also known as Ivan, Alyaksandr Viktaravich Ivanow, Alyaksandr Ivanow, Alyaksandr Ivanou, Aleksandr Viktorovich Ivanov (wd:Q17198200): Belarusian-Russian singer, singer
10. Ivan Ivanov, also known as Ivan Kamenov Ivanov (wd:Q739830): Bulgarian footballer, born 1988, association football player

[Assistant]
The entity for Ivan Lendl, the Czech-American tennis player, is wd:Q182736.

Step 2: I will now search for the events won by Ivan Lendl. These events are likely to be tennis tournament wins or titles. I will look for properties related to "winner" or "champion" associated with Ivan Lendl.

[Tool]
Top 10 property alternatives:
1. award received, also known as win, winner of, recognition title, received award, prize received (wd:P166 as p/wdt): award or recognition received by a person, organization or creative work
2. member of sports team, also known as plays for, played for, sport team, team, team played for (wd:P54 as p/wdt): sports teams or clubs that the subject represents or represented, member of
3. place of birth, also known as POB, location of birth, location born, born in, birthplace (wd:P19 as p/wdt): most specific known birth location of a person, animal or fictional character, location
4. date of birth, also known as year of birth, birthdate, DOB, born on, born (wd:P569 as p/wdt): date on which the subject was born, inception
5. given name, also known as name, proper name, personal name, middle name, forename (wd:P735 as p/wdt): first name or another given name of this person; values used with the property should not link disambiguations nor family names, name
6. prize money, also known as money, purse, value (wd:P2121 as p/wdt): amount in a specific currency
7. image, also known as still capture, still, screenshot, screen capture, portrait (wd:P18 as p/wdt): image of relevant illustration of the subject; if available, als...tor map, flag image, signature image, logo image, collage image)
8. country of citizenship, also known as subject of (country), nation of citizenship, national of, nationality, nation (wd:P27 as p/wdt): the object is a country that recognizes the subject as its citizen, country
9. sport, also known as play, plays, sport played, sports (wd:P641 as p/wdt): sport that the subject participates or participated in or is associated with
10. described by source, also known as mentioned in, source of item, reviewed in, mentioned in news article, talked about in (wd:P1343 as p/wdt): work where this item is described, attested in

No other items found

[Assistant]
The property "award received" (wdt:P166) is the most relevant to represent events or titles won by Ivan Lendl.

Step 3: I will now query for the awards or events won by Ivan Lendl using the property "award received" (wdt:P166). Then I will try to gather additional information about each event such as tournament, year, country, surface played on, prize money, and number of participants if available.

[Tool]
SPARQL execution failed:
Error while executing a SERVICE request to <http://wikiba.se:80/ontology#label>: SERVICE responded with HTTP status code: 301, Moved Permanently. First 100 bytes of the response: '<html>
<head><title>301 Moved Permanently</title></head>
<body>
<center><h1>301 Moved Permanently'

[Assistant]
The query failed because the SERVICE wikibase:label is not supported by the used QLever SPARQL endpoint. I will rewrite the query without using SERVICE wikibase:label and instead use optional rdfs:label for labels. Also, I need to correct the properties for tournament, year, country, surface, prize money, and participants as the ones I used were incorrect or not suitable for events.

Step 4: I will identify the correct properties for tournament, year, country, surface, prize money, and number of participants related to tennis events or awards. Then I will rewrite and execute the query again.

[Tool]
Top 10 property alternatives:
1. league or competition, also known as tournament, sports league, division, cup, competition (wd:P118 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): league or competition in which team or player has played, or in which an event occurs, participant in
2. tournament type (wd:P11964 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): significance or status of a sports competition for a league, tour, association, etc.
3. tournament format, also known as tournament system (wd:P8127 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): format of a sports tournament
4. sports season of league or competition, also known as sport season, seasons of, edition of annual athletics meeting, season of sports tournament, season of sports league (wd:P3450 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): property that shows the competition of which the item is a season. Use P5138 for "season of club or team"., part of
5. sports discipline competed in, also known as sport discipline competed in, weight class competed in, sports event, sports disciplines competed in, sports discipline (wd:P2416 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): discipline an athlete competed in within a sport, field of work
6. OnsOranje tournament ID (wd:P5162 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): identifier for a tournament in the database of OnsOranje
7. prize money, also known as money, purse, value (wd:P2121 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): amount in a specific currency
8. sports competition competed at (wd:P5249 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): edition of sports competitions at which the club or team that pl...ple: 2012–13 FC Barcelona season → 2012–13 UEFA Champions League
9. ITF tournament ID (wd:P6841 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): identifier for a tennis tournament edition in the International Tennis Federation database
10. competition won, also known as won event, won, winner of, victory (wd:P2522 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): competition or sports event won by the subject, participant in

[Tool]
Top 10 property alternatives:
1. point in time, also known as at time, as of, year, when, time of event (wd:P585 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): date something took place, existed or a statement was true; for providing time use the "refine date" property (P4241)
2. inception, also known as initial release date, founded in, founded on, founded on date, founding date (wd:P571 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): time when an entity begins to exist; for date of official opening use P1619, start time
3. publication date, also known as launched, published, publication time, publication, pubdate (wd:P577 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): date or point in time when a work was first published or released, point in time
4. production date, also known as date of production, filming date, filming time, production date, year of production (wd:P2754 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): period of active production of (creative) work; the only date st... publication date (P577); in general cases, use inception (P571)
5. day in year for periodic occurrence, also known as date, day, day in year, day of periodic occurrence, day of year (wd:P837 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): when a specific holiday or periodic event occurs. Can be used as property or qualifier
6. year of publication of scientific name for taxon, also known as taxon year, year of scientific description, taxon date, described in, date of taxon description publication (wd:P574 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): year when this taxon was formally described (for animals); year when this taxon name was formally established (for plants), publication date
7. work period (end), also known as floruit end, floruit (end of work), flourished (end), retirement, work ends (wd:P2032 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): end of period during which a person or group flourished (fl. = "floruit") in their professional activity, end time, floruit
8. date of incorporation, also known as date incorporated, incorporated, incorporated on date, incorporation date, year incorporated (wd:P10786 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): date when company, organization or city was incorporated
9. date depicted, also known as depicted date, temporal coverage, shown as at date, depicts date, depicted time (wd:P2913 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): date represented in a work (for narrative works use P2408)
10. announcement date, also known as released, date teased, made public on, public announcement date, published (wd:P6949 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): time of the first public presentation of a subject by the creator, of information by the media, point in time

[Tool]
Top 10 property alternatives:
1. valid in place, also known as applies to country, applies to location, applies to place, country, true in (wd:P3005 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): place where a statement is valid, applies to part
2. country of origin, also known as origin country, place of origin, originates from, country, CoO (wd:P495 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): country of origin of this item (creative work, food, phrase, product, etc.), significant place, country
3. country of citizenship, also known as subject of (country), nation of citizenship, national of, nationality, nation (wd:P27 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): the object is a country that recognizes the subject as its citizen, country
4. country, also known as sovereign state, state, land, host country (wd:P17 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): sovereign state that this item is in (not to be used for human beings), located in the administrative territorial entity
5. operating area, also known as province served, serves jurisdiction, serves geographic region, serves geographic area, serves area (wd:P2541 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): geographic area or jurisdiction an organisation or industry operates in, serves, or has responsibility for, location
6. place of birth, also known as POB, location of birth, location born, born in, birthplace (wd:P19 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): most specific known birth location of a person, animal or fictional character, location
7. continent (wd:P30 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): continent of which the subject is a part, located in/on physical feature
8. located in the administrative territorial entity, also known as is in the settlement of, is in the voivodeship of, is in the shire of, is in the state of, is in the territory of (wd:P131 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): the item is located on the territory of the following administra...if the item falls only partially into the administrative entity., location, part of
9. place of publication, also known as published in (place), where published, release region, released in, published from (wd:P291 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): geographical place of publication of the edition (use 1st edition when referring to works), significant place
10. location, also known as neighbourhood, whereabouts, vilage, venue, town (wd:P276 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): location of the object, structure or event. In the case of an ad...ity use P706. Use P7153 for locations associated with the object

[Tool]
Top 10 property alternatives:
1. area, also known as total area, surface area, surface, size, resolution (wd:P2046 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): area occupied by an object
2. has surface (wd:P10614 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): the object is the 2-dimensional surface that partly or completely surrounds the subject in 3-dimensional space
3. surface played on, also known as playing surface (wd:P765 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): the surface on which a sporting event is played
4. surface tension (wd:P3013 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): physical property of liquid
5. home venue, also known as home water, venue, stadium, home ground, home field (wd:P115 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): home stadium or venue of a sports team or applicable performing arts organization, location
6. surface gravity (wd:P7015 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): gravitational acceleration experienced at the equator of an astronomical body surface
7. substrate of (wd:P2414 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): substrate that an enzyme acts upon to create a product, has use
8. number of platform faces, also known as number of platforms, platform faces, platforms (wd:P5595 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of continuous platform edges facing a track or vehicle gu...latform numbers). See property talk page for illustrated samples
9. image, also known as still capture, still, screenshot, screen capture, portrait (wd:P18 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): image of relevant illustration of the subject; if available, als...tor map, flag image, signature image, logo image, collage image)
10. destination point, also known as stopping at, to, journey destination, finish, end point (journey) (wd:P1444 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): destination for this route (journey, flight, sailing, exploration, migration, etc.), destination of transfer, location

[Tool]
Top 10 property alternatives:
1. prize money, also known as money, purse, value (wd:P2121 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): amount in a specific currency
2. award received, also known as win, winner of, recognition title, received award, prize received (wd:P166 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): award or recognition received by a person, organization or creative work
3. winner, also known as nominee, prizewinner, titleholder, top dog, victor (wd:P1346 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): winner of a competition or similar event, not to be used for awa...ssibly qualified with "for work" (P1686)) or for wars or battles, participating team, participant
4. league or competition, also known as tournament, sports league, division, cup, competition (wd:P118 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): league or competition in which team or player has played, or in which an event occurs, participant in
5. competition won, also known as won event, won, winner of, victory (wd:P2522 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): competition or sports event won by the subject, participant in
6. points for, also known as championship points, competition points, league points, pf, points (wd:P1358 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of points in a league table or decathlon. (Use P1351 for goals/points in a match)
7. tournament format, also known as tournament system (wd:P8127 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): format of a sports tournament
8. trophy awarded, also known as cup awarded, diploma awarded, medal awarded (wd:P4622 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): trophy awarded at the end of a selection process or of a competi...winners or finishers under the form of a cup, a medal, a diploma
9. sports season of league or competition, also known as sport season, seasons of, edition of annual athletics meeting, season of sports tournament, season of sports league (wd:P3450 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): property that shows the competition of which the item is a season. Use P5138 for "season of club or team"., part of
10. tournament type (wd:P11964 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): significance or status of a sports competition for a league, tour, association, etc.

[Tool]
Top 10 property alternatives:
1. number of participants, also known as number of competitors, number of teams, participant count, participants, qty participants (wd:P1132 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of participants of an event, e.g. people or groups of people that take part in the event (NO units), quantity
2. participant, also known as suspect, player, party, participants, has participant (wd:P710 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): person, group of people or organization (object) that actively t...ct has role" (P3831). Use P1923 for participants that are teams., significant person
3. number of aid beneficiaries, also known as number of aid recipients, number of beneficiaries, number of people reached, people reached (wd:P9077 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of people reached with international aid programmes, acti...ctivities. Qualify with "point in time" (P585) where appropriate
4. number of volunteers, also known as volunteers (wd:P6125 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of people who volunteer for an organization at a particular time
5. participant in, also known as participated in, present at, takes part, took part, took part in (wd:P1344 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): event in which a person or organization was/is a participant; inverse of P710 or P1923, significant event, part of
6. group cardinality, also known as cardinality of the group, group order, group size (wd:P1164 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of elements in a finite group in mathematics
7. number of players in region, also known as number of people practicing sport, number of registered players, number of sportspeople, number of sportspersons (wd:P4909 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of registered players in a sport or people practicing a sport in a region
8. number of seats, also known as membership quantity, number of seats (members), quantity of members, seats (members) (wd:P1342 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): total number of seats/members in an assembly (legislative house or similar)
9. member count, also known as total members, number of members, count of members, amount of members, membership (wd:P2124 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of entities that are part of an organization at a particular time
10. number of registered users/contributors, also known as number of contributors, number of registered users, number of users, users (wd:P1833 as prv/psv/psn/pr/p/wdtn/prn/ps/pqn/pqv/pq/wdt): number of registered users on a website

[Assistant]
The relevant properties for the information requested are:
- tournament: league or competition (wdt:P118)
- year: point in time (wdt:P585)
- country: country (wdt:P17)
- surface played on: surface played on (wdt:P765)
- prize money: prize money (wdt:P2121)
- number of participants: number of participants (wdt:P1132)

Step 5: I will now write a SPARQL query to get the events won by Ivan Lendl (wd:Q182736) along with the tournament, year, country, surface played on, prize money, and number of participants if available. I will use optional clauses for the additional information and use rdfs:label for labels.

[Tool]
SPARQL execution failed:
HTTPSConnectionPool(host='qlever.cs.uni-freiburg.de', port=443): Read timed out. (read timeout=30)

[Assistant]
The query execution timed out, likely due to the complexity or size of the data. I will try to simplify the query by first retrieving only the events won by Ivan Lendl and their labels. Then I will iteratively add more information to avoid timeout.

Step 6: Query only the events won by Ivan Lendl with their labels.

[Tool]
Got 1 row and 2 columns:
| event                                         | eventLabel                             |
| --------------------------------------------- | -------------------------------------- |
| International Tennis Hall of Fame (wd:Q52454) | International Tennis Hall of Fame (en) |

[Assistant]
The only event found as an award received by Ivan Lendl is the "International Tennis Hall of Fame" (wd:Q52454), which is not a tournament win but an honor.

Step 7: I will try a different approach to find the tournaments or events won by Ivan Lendl. I will look for tennis tournament wins or titles where Ivan Lendl is the winner using the property "competition won" (wdt:P2522) or "winner" (wdt:P1346). I will search for events where Ivan Lendl is the winner.

[Tool]
Got 64 rows and 2 columns, showing the first 5 and last 5 rows below:
| event                                                       | eventLabel                                        |
| ----------------------------------------------------------- | ------------------------------------------------- |
| 1984 French Open – men's singles (wd:Q1082806)              | 1984 French Open – men's singles (en)             |
| 1982 Volvo Masters – singles (wd:Q15056431)                 | 1982 Volvo Masters – singles (en)                 |
| 1986 Nabisco Masters – singles (wd:Q15215127)               | 1986 Nabisco Masters – singles (en)               |
| 1978 Wimbledon Championships – boys' singles (wd:Q17638692) | 1978 Wimbledon Championships – boys' singles (en) |
| 1987 US Open – men's singles (wd:Q1875686)                  | 1987 US Open – men's singles (en)                 |
| ...                                                         | ...                                               |
| 1986 French Open – men's singles (wd:Q746215)               | 1986 French Open – men's singles (en)             |
| 1986 US Open – men's singles (wd:Q780680)                   | 1986 US Open – men's singles (en)                 |
| 1990 Australian Open – men's singles (wd:Q941208)           | 1990 Australian Open – men's singles (en)         |
| 1987 French Open – men's singles (wd:Q943066)               | 1987 French Open – men's singles (en)             |
| 1985 US Open – men's singles (wd:Q951334)                   | 1985 US Open – men's singles (en)                 |

[Assistant]
I found 64 events where Ivan Lendl is the winner. These are tennis tournament events. Now I will try to get additional information for these events such as tournament, year, country, surface played on, prize money, and number of participants.

Step 8: I will write a query to get the details for these events including tournament, year, country, surface played on, prize money, and number of participants if available. I will limit the results to 50 for performance.

[Tool]
SPARQL execution failed:
Tried to allocate 3.3 GB, but only 1.8 GB were available. Clear the cache or allow more memory for QLever during startup

[Assistant]
The query failed due to memory limitations. I will reduce the number of optional properties queried at once and split the query into multiple smaller queries to gather the information step by step.

Step 9: First, I will get the events won by Ivan Lendl with their tournament and year.

[Tool]
SPARQL execution failed:
Tried to allocate 6.6 GB, but only 2.2 GB were available. Clear the cache or allow more memory for QLever during startup

[Assistant] The query still fails due to memory limitations. I will reduce the limit to 10 and try again to get events with tournament and year.

[Tool]
SPARQL execution failed:
Tried to allocate 3.3 GB, but only 3.1 GB were available. Clear the cache or allow more memory for QLever during startup

[Assistant]
The query still fails due to memory limitations. I will simplify the query further by only retrieving the events and their labels without any additional information. Then I will try to get details for each event one by one.

Step 10: Get only the events won by Ivan Lendl with their labels, limit 10.

[Tool]
Got 10 rows and 2 columns:
| event                                                            | eventLabel                                             |
| ---------------------------------------------------------------- | ------------------------------------------------------ |
| 1984 French Open – men's singles (wd:Q1082806)                   | 1984 French Open – men's singles (en)                  |
| 1982 Volvo Masters – singles (wd:Q15056431)                      | 1982 Volvo Masters – singles (en)                      |
| 1986 Nabisco Masters – singles (wd:Q15215127)                    | 1986 Nabisco Masters – singles (en)                    |
| 1978 Wimbledon Championships – boys' singles (wd:Q17638692)      | 1978 Wimbledon Championships – boys' singles (en)      |
| 1987 US Open – men's singles (wd:Q1875686)                       | 1987 US Open – men's singles (en)                      |
| 1982 Chicago Michelob Lite Challenge of Champions (wd:Q19870252) | 1982 Chicago Michelob Lite Challenge of Champions (en) |
| 1982 Toronto Molson Light Challenge (wd:Q19870259)               | 1982 Toronto Molson Light Challenge (en)               |
| 1985 Atlanta AT&T Challenge of Champions (wd:Q19870272)          | 1985 Atlanta AT&T Challenge of Champions (en)          |
| 1984 Toronto Molson Light Challenge (wd:Q23039525)               | 1984 Toronto Molson Light Challenge (en)               |
| 1981 South American Championships – singles (wd:Q3601492)        | 1981 South American Championships – singles (en)       |

[Assistant]
I have retrieved 10 events won by Ivan Lendl with their labels. Now I will query additional details for these events one by one to avoid memory issues.

Step 11: I will write a query to get the tournament, year, country, surface played on, prize money, and number of participants for the event "1984 French Open – men's singles" (wd:Q1082806) as an example.

[Tool] Got no rows and 9 columns

[Assistant]
The query returned no results for the additional details of the event "1984 French Open – men's singles" (wd:Q1082806). It seems that the properties I used for tournament, year, country, surface, prize money, and participants may not be directly linked to the event entity.

Step 12: I will try to get the properties and values of the event "1984 French Open – men's singles" (wd:Q1082806) to understand how the information is structured.

[Tool]
Got 93 rows and 3 columns, showing the first 10 rows below:
| subject                                        | property                      | object                                         |
| ---------------------------------------------- | ----------------------------- | ---------------------------------------------- |
| 1984 French Open – men's singles (wd:Q1082806) | instance of (wdt:P31)         | tennis event (wd:Q46190676)                    |
| 1984 French Open – men's singles (wd:Q1082806) | country (wdt:P17)             | France (wd:Q142)                               |
| 1984 French Open – men's singles (wd:Q1082806) | part of (wdt:P361)            | 1984 French Open (wd:Q924193)                  |
| 1984 French Open – men's singles (wd:Q1082806) | sport (wdt:P641)              | tennis (wd:Q847)                               |
| 1984 French Open – men's singles (wd:Q1082806) | follows (wdt:P155)            | 1983 French Open – men's singles (wd:Q2714991) |
| 1984 French Open – men's singles (wd:Q1082806) | followed by (wdt:P156)        | 1985 French Open – men's singles (wd:Q519237)  |
| 1984 French Open – men's singles (wd:Q1082806) | point in time (wdt:P585)      | 1984-01-01T00:00:00Z (xsd:dateTime)            |
| 1984 French Open – men's singles (wd:Q1082806) | winner (wdt:P1346)            | Ivan Lendl (wd:Q182736)                        |
| 1984 French Open – men's singles (wd:Q1082806) | competition class (wdt:P2094) | men's singles (wd:Q16893072)                   |
| 1984 French Open – men's singles (wd:Q1082806) | Freebase ID (wdt:P646)        | /m/0bh7hv                                      |
| ...                                            | ...                           | ...                                            |

[Assistant]
From the properties of the event "1984 French Open – men's singles" (wd:Q1082806), I see the following relevant information:
- country (wdt:P17) is France (wd:Q142)
- part of (wdt:P361) is the tournament "1984 French Open" (wd:Q924193)
- point in time (wdt:P585) is the year 1984
- winner (wdt:P1346) is Ivan Lendl (wd:Q182736)

The surface, prize money, and number of participants are not directly listed here. I will check the tournament entity "1984 French Open" (wd:Q924193) for surface and prize money.

Step 13: Get surface, prize money, and number of participants for the tournament "1984 French Open" (wd:Q924193).

[Tool]
Got 124 rows and 3 columns, showing the first 10 rows below:
| subject                       | property                                                    | object                                                                       |
| ----------------------------- | ----------------------------------------------------------- | ---------------------------------------------------------------------------- |
| 1984 French Open (wd:Q924193) | instance of (wdt:P31)                                       | French Open (wd:Q43605)                                                      |
| 1984 French Open (wd:Q924193) | country (wdt:P17)                                           | France (wd:Q142)                                                             |
| 1984 French Open (wd:Q924193) | located in the administrative territorial entity (wdt:P131) | Paris (wd:Q90)                                                               |
| 1984 French Open (wd:Q924193) | image (wdt:P18)                                             | <http://commons.wikimedia.org/wiki/Special:FilePath/RolandGarrosCentral.jpg> |
| 1984 French Open (wd:Q924193) | location (wdt:P276)                                         | Paris (wd:Q90)                                                               |
| 1984 French Open (wd:Q924193) | has part(s) (wdt:P527)                                      | 1984 French Open – men's singles (wd:Q1082806)                               |
| 1984 French Open (wd:Q924193) | sport (wdt:P641)                                            | tennis (wd:Q847)                                                             |
| 1984 French Open (wd:Q924193) | follows (wdt:P155)                                          | 1983 French Open (wd:Q660527)                                                |
| 1984 French Open (wd:Q924193) | followed by (wdt:P156)                                      | 1985 French Open (wd:Q924083)                                                |
| 1984 French Open (wd:Q924193) | native label (wdt:P1705)                                    | Internationaux de France de tennis 1984 (fr)                                 |
| ...                           | ...                                                         | ...                                                                          |

[Assistant]
The tournament "1984 French Open" (wd:Q924193) has many properties but I did not find direct information about surface, prize money, or number of participants in the first 10 rows. I will try to find these properties specifically for this tournament.

Step 14: Search for properties related to "surface" for the tournament "1984 French Open" (wd:Q924193).

[Tool]
Top 10 property alternatives:
1. image, also known as still capture, still, screenshot, screen capture, portrait (wd:P18 as p/wdt): image of relevant illustration of the subject; if available, als...tor map, flag image, signature image, logo image, collage image)
2. country, also known as sovereign state, state, land, host country (wd:P17 as p/wdt): sovereign state that this item is in (not to be used for human beings), located in the administrative territorial entity
3. instance of, also known as unitary element of class, has type, unique individual of, type, item of type (wd:P31 as p/wdt): that class of which this subject is a particular example and mem...is a subclass of mountain (and an instance of volcanic landform)
4. sport, also known as play, plays, sport played, sports (wd:P641 as p/wdt): sport that the subject participates or participated in or is associated with
5. location, also known as neighbourhood, whereabouts, vilage, venue, town (wd:P276 as p/wdt): location of the object, structure or event. In the case of an ad...ity use P706. Use P7153 for locations associated with the object
6. end time, also known as ends, stop time, endtime, fall date, ineffective (wd:P582 as p/wdt): moment when an entity ceases to exist and a statement stops being entirely valid or no longer be true, point in time
7. located in the administrative territorial entity, also known as is in the settlement of, is in the voivodeship of, is in the shire of, is in the state of, is in the territory of (wd:P131 as p/wdt): the item is located on the territory of the following administra...if the item falls only partially into the administrative entity., location, part of
8. has part(s), also known as has component, incorporates, has ingredient, has ingredients, has member (wd:P527 as p/wdt): part of this subject; inverse property of "part of" (P361). See also "has parts of the class" (P2670).
9. point in time, also known as at time, as of, year, when, time of event (wd:P585 as p/wdt): date something took place, existed or a statement was true; for providing time use the "refine date" property (P4241)
10. Freebase ID, also known as Freebase, MID, Freebase identifier, FID (wd:P646 as p/wdt): identifier for a page in the Freebase database. Format: "/m/0" f...r IDs starting with "/g/", use Google Knowledge Graph ID (P2671)

No other items found

[Assistant]
There is no direct property for surface for the tournament "1984 French Open" (wd:Q924193). I will try to check the general French Open (wd:Q43605) for surface information as it is the instance of the tournament.

Step 15: Get properties of the French Open (wd:Q43605) related to surface, prize money, and participants.

[Tool]
Got 554 rows and 3 columns, showing the first 10 rows below:
| subject                 | property                                                    | object                                                                                |
| ----------------------- | ----------------------------------------------------------- | ---------------------------------------------------------------------------------------------- |
| French Open (wd:Q43605) | instance of (wdt:P31)                                       | recurring tennis tournament (wd:Q47443726)                                                     |
| French Open (wd:Q43605) | country (wdt:P17)                                           | France (wd:Q142)                                                                               |
| French Open (wd:Q43605) | located in the administrative territorial entity (wdt:P131) | Paris (wd:Q90)                                                                                |
| French Open (wd:Q43605) | coordinate location (wdt:P625)                              | POINT(2.249250 48.847167) (geo:wktLiteral)                                                     |
| French Open (wd:Q43605) | Commons category (wdt:P373)                                 | French Open                                                                                |
| French Open (wd:Q43605) | image (wdt:P18)                                             | <http://commons.wikimedia.org/wiki/Special:FilePath/Roland%20Garros%20Stadium%20in%202007.jpg> |
| French Open (wd:Q43605) | part of (wdt:P361)                                          | Grand Slam of tennis (wd:Q102113)                                                              |
| French Open (wd:Q43605) | subclass of (wdt:P279)                                      | tennis tournament (wd:Q13219666)                                                               |
| French Open (wd:Q43605) | location (wdt:P276)                                         | Stade Roland Garros (wd:Q1613027)                                                              |
| French Open (wd:Q43605) | inception (wdt:P571)                                        | 1891-01-01T00:00:00Z (xsd:dateTime)                                                            |
| ...                     | ...                                                         | ...                                                                                |

[Assistant]
The French Open (wd:Q43605) has many properties but I did not find direct information about surface, prize money, or number of participants in the first 10 rows. I will search specifically for the property "surface played on" (wdt:P765) for the French Open.

Step 16: Check if the French Open (wd:Q43605) has the property "surface played on" (wdt:P765).

[Tool]
Got 1 row and 3 columns:
| subject                 | property                     | object              |
| ----------------------- | ---------------------------- | ------------------- |
| French Open (wd:Q43605) | surface played on (wdt:P765) | clay (wd:Q47676928) |

[Assistant]
The French Open (wd:Q43605) has the property "surface played on" (wdt:P765) with the value "clay" (wd:Q47676928).

Step 17: I will now check for prize money (wdt:P2121) and number of participants (wdt:P1132) for the French Open (wd:Q43605).

[Tool] Got no rows and 3 columns

[Tool] Got no rows and 3 columns

[Assistant]
The French Open (wd:Q43605) does not have direct information about prize money or number of participants in Wikidata.

Summary:
- Events won by Ivan Lendl can be found using the property "winner" (wdt:P1346).
- Each event has a "part of" (wdt:P361) property linking to the tournament.
- The tournament has a "surface played on" (wdt:P765) property.
- The year of the event is given by "point in time" (wdt:P585).
- The country of the event is given by "country" (wdt:P17).
- Prize money and number of participants are generally not available in Wikidata for these events.

I will now write a SPARQL query to return the events won by Ivan Lendl with the tournament, year, country, and surface played on (if available). Prize money and number of participants will be omitted due to lack of data. I will limit the results to 50.

[Tool] Stopped generation process

[User]
Feedback (status=refine):
The SPARQL query correctly retrieves events won by Ivan Lendl along with tournament, year, country, and surface played on. However, it does not include prize money and number of participants, which the system states is due to lack of data in Wikidata. It would be good to explicitly attempt to retrieve prize money (wdt:P2139) and number of participants (wdt:P1132) as optional properties in the query to confirm their absence. Also, the query currently limits results to 50, which might omit some events; consider removing or increasing the limit to get a more complete answer. Additionally, the query should ensure that labels for all entities are retrieved in a consistent manner using OPTIONAL clauses with rdfs:label and language filters. Overall, the answer is mostly correct but could be improved by attempting to retrieve all requested properties and clarifying the data availability.

[Assistant]
Thank you for the feedback. I will improve the SPARQL query by explicitly including optional retrieval of prize money (wdt:P2139) and number of participants (wdt:P1132) to confirm their presence or absence. I will also remove the limit to get a more complete answer and ensure consistent retrieval of labels for all entities using OPTIONAL clauses with rdfs:label and language filters.

I will now provide the improved SPARQL query and answer.

[Tool] Stopped generation process

[User]
Feedback (status=refine):
The SPARQL query is generally well-constructed and retrieves the requested information about events won by Ivan Lendl, including tournament, year, country, surface, prize money, and participants. However, there are some points for improvement:

1. The query uses OPTIONAL for tournament and its labels, but the tournament is essential information for the events won, so it should be mandatory if available in the data.
2. The query retrieves the year using wdt:P585 (point in time), but this property can include full date-time values; it might be better to extract just the year or use a more specific property if available.
3. The country is queried as the country of the event (wdt:P17), which is correct, but some events might not have this property set, leading to missing data.
4. The surface is queried as a property of the tournament (wdt:P765), but sometimes the surface might be directly linked to the event instead.
5. Prize money (wdt:P2139) is queried, but this property is typically for organizations' revenue; for prize money, a more specific property might be used if available.
6. The query does not order or limit results; adding an ORDER BY year descending might improve readability.

Overall, the query is good but could be refined to ensure completeness and accuracy of the data retrieved.

[Assistant]
Thank you for the detailed feedback. I will refine the SPARQL query accordingly:

1. Make the tournament mandatory by requiring the "part of" (wdt:P361) property for events.
2. Extract just the year from the "point in time" (wdt:P585) property using the YEAR() function.
3. Keep the country as optional since it might be missing for some events.
4. Query the surface both from the event and the tournament to cover both cases.
5. Use the property "prize money" (wdt:P2121) instead of wdt:P2139 for prize money.
6. Add ORDER BY descending year for better readability.

I will now provide the refined SPARQL query and answer.

[Tool] Stopped generation process