PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?ship ?serviceEntry ?label WHERE {
  ?ship wdt:P31 wd:Q11446 .
  {
    ?ship wdt:P8047 wd:Q20 .
  } UNION {
    ?ship wdt:P17 wd:Q20 .
  } UNION {
    ?ship wdt:P137 wd:Q20 .
  } UNION {
    ?ship wdt:P163 wd:Q20 .
  }
  ?ship wdt:P729 ?serviceEntry .
  FILTER ( ?serviceEntry >= "1939-01-01" ^^ xsd:date && ?serviceEntry <= "1946-12-31" ^^ xsd:date ) OPTIONAL {
    ?ship rdfs:label ?label
  }
}
ORDER BY ?serviceEntry

This query retrieves Norwegian ships (by country of registry, country, operator, or flag) that entered operational service between 1939 and 1946, along with their service entry dates and all available labels (including English, Norwegian, and others).

[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] Which Norwegian ships entered operational service between 1939 and 1946, along with their service entry dates?

[Assistant]
Let's break down the question:

1. We are looking for ships (entities that are ships).
2. The ships should be Norwegian (operated by Norway or under Norwegian flag).
3. The ships should have entered operational service (service entry date) between 1939 and 1946.
4. We want the ships and their service entry dates.

First, I need to identify:
- The entity for "ship".
- The property for "country of registry" or "operator" to filter for Norwegian ships.
- The property for "service entry" or "commissioning date".

Let's start by searching for the entity "ship".

[Tool]
Top 10 entity alternatives:
1. ship, also known as water vessel, vessel, marine vessel, ships (wd:Q11446): large buoyant watercraft
2. Shippensburg University of Pennsylvania, also known as Ship, ship.edu, Shipenburg, Shipensburg, Shippenburg (wd:Q7498066): public university in Shippensburg, Pennsylvania, United States
3. INPP5D, also known as hp51CN, inositol polyphosphate-5-phosphatase D, p150Ship, SHIP, SHIP-1 (wd:Q18027947): protein-coding gene in the species Homo sapiens
4. Morena Ship, also known as Ship (wd:Q21472350): hill in Antarctica
5. The Ship, also known as Ship, The Ship, Fitzrovia (wd:Q24022978): public house in New Cavendish Street, London, UK
6. The Ship, also known as Ship (wd:Q7763836): episode of Star Trek: Deep Space Nine (S5 E2)
7. 🚢, also known as SHIP, U+1F6A2, ship emoji (wd:Q87581923): Unicode character
8. 𐇨, also known as 𐇨, U+101E8, ship, PHAISTOS DISC SIGN SHIP (wd:Q87545964): Phaistos disc sign ship (U+101E8), 25th sign
9. Search for Hidden Particles, also known as SHiP (wd:Q108443828): Particle physics experiment at CERN
10. The Ship Public House, also known as Ship (wd:Q26666058): pub in Plymouth, Devon, England, UK

[Assistant]
The correct entity for "ship" is wd:Q11446.

Next, I need to find the property for "country of registry" or "operator" to filter for Norwegian ships. I'll search for properties related to "country" and "operator".

[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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): most specific known birth location of a person, animal or fictional character, location
7. continent (wd:P30 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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. operator, also known as offered by, operated by, provided by, run by, service operator (wd:P137 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): person, profession, organization or entity that operates the equipment, facility, or service, used by
2. item operated, also known as fleet, item used, operated, operates, operator of (wd:P121 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): equipment, installation or service operated by the subject, uses
3. operations and procedures key (OPS), also known as OPS (wd:P1691 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): official classification of operational procedures
4. operating area, also known as province served, serves jurisdiction, serves geographic region, serves geographic area, serves area (wd:P2541 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): geographic area or jurisdiction an organisation or industry operates in, serves, or has responsibility for, location
5. opus number, also known as op. (wd:P10855 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): number that is assigned to a musical composition, or to a set of...to indicate the chronological order of the composer's production
6. operator licence number, also known as Traffic Commissioners for Great Britain operator license number, Traffic Commissioners for Great ... vehicle operator license number, vehicle operator licence number (wd:P9308 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): British heavy goods vehicle (HGV) and public service vehicle (PSV) operator license number
7. commanded by, also known as captain, commander, commanding officer (wd:P4791 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): commander of a military unit/army/security service, operation, etc.
8. agent of action, also known as being done by, initiator, initiated by, done by, doer (wd:P12995 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): particular item that initiates this action or class of actions
9. amateur radio callsign, also known as call sign, callsign, radio callsign (wd:P5143 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): callsign assigned to licensed Amateur Radio operator, station or satellite
10. call sign, also known as call letters, callsign, code letters (wd:P2317 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): short form identifier for a radio operator or broadcaster and (as flag signal) previous for watercrafts

[Tool]
Top 10 property alternatives:
1. flag, also known as flag description (wd:P163 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): subject's flag
2. symbol of, also known as emblem of, flag of, logo of, seal of, symbolises (wd:P8058 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): item of which the image is a symbol
3. flag image, also known as image flag, image of flag (wd:P41 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): image of the item's flag, image, flag
4. country of registry, also known as ship's flag, flag state, flag of convenience (wd:P8047 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): country where a ship is or has been registered, country
5. flag bearer (wd:P3022 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): person who carries the national flag of their country at an opening or closing ceremony
6. logo image, also known as masthead, wordmark, trademark, trade mark, sign (wd:P154 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): graphic mark or emblem commonly used by commercial enterprises, organizations and products, icon
7. coat of arms (wd:P237 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): subject's coat of arms
8. color, also known as with the colour, with the color, pigment, of the colour, of the color (wd:P462 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): color of subject
9. Flags of the World ID, also known as Flags of the World ID, FOTW ID (wd:P3089 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): identifier for a flag in the Flags of the World database
10. official color, also known as official colors, signature colors, signature color (wd:P6364 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): official colors chosen to represent or identify an item

[Tool]
Top 10 entity alternatives:
1. Norway, also known as Kingdom of Norway (wd:Q20): country in Northern Europe
2. Norway, also known as Norway, Iowa, Norway, IA (wd:Q1913264): city in Iowa, United States
3. Norway, also known as Norway, MI, Norway, Michigan (wd:Q2480177): city in Dickinson County, Michigan, United States
4. Norway, also known as Norway, SC, Norway, South Carolina (wd:Q3243583): town in South Carolina
5. Kingdom of Norway, also known as Norway, Norwegian Empire (wd:Q2196956): former Kingdom from 872 to 1397
6. Norway, also known as Norway, Maine, Norway, ME (wd:Q2734330): town in Maine, USA
7. Norway, also known as Norway, IN, Norway, Indiana (wd:Q2118814): census-designated place in Indiana
8. Kingdom of Norway, also known as Norway, Norwegian Kingdom (wd:Q2597352): short-lived monarchy in Northern Europe (1814)
9. Norway, also known as Norway, New York, Norway, NY (wd:Q944765): town in New York, USA
10. Norway, also known as Norway, WI (wd:Q3046928): town in Wisconsin, USA

[Assistant]
The correct entity for Norway is wd:Q20.

For Norwegian ships, the most precise property is "country of registry" (wd:P8047), which is specifically for ships and is also called "ship's flag".

Next, I need to find the property for "service entry" or "commissioning date" to get when the ship entered operational service. I'll search for "service entry" and "commissioning".

[Tool]
Top 10 property alternatives:
1. service entry, also known as commissioned, time of service entry, service introduction, launch date, in service (wd:P729 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date or point in time on which a piece or class of equipment entered operational service, start time
2. Free Software Directory entry, also known as directory.fsf.org, FSD entry, FSF, FSF directory (wd:P2537 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): link to the FSD page on a given software or license
3. in operation on service, also known as transport route of vehicle, transport route operated, transport route served, transport route serviced, used on route (wd:P10788 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): service that a vehicle is operating on
4. product or material produced, also known as products, product or service provided, product, material, or service produced or provided, product, producer of (wd:P1056 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): material or product produced or sold by an organization, industry, facility, or process, material or product produced by an organization, industry, facility, or process, immediate cause of
5. product, material, or service produced or provided, also known as products, product or service provided, product, material, or service produced or provided, product, output (wd:P1056 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): material or product produced or sold by an organization, industry, facility, or process, material or product produced by an organization, industry, facility, or process, immediate cause of
6. operator, also known as offered by, operated by, provided by, run by, service operator (wd:P137 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): person, profession, organization or entity that operates the equipment, facility, or service, used by
7. connecting service, also known as halt of, stop of (wd:P1192 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): service stopping at a station
8. Collins Online English Dictionary entry, also known as COED entry (wd:P11230 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): identifier for an entry in the Collins Online English Dictionary
9. military branch, also known as unit branch, service branch, formation, branch (wd:P241 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): branch to which this military unit, award, office, or person belongs, e.g. Royal Navy, part of
10. item operated, also known as fleet, item used, operated, operates, operator of (wd:P121 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): equipment, installation or service operated by the subject, uses

[Tool]
Top 10 property alternatives:
1. service entry, also known as commissioned, time of service entry, service introduction, launch date, in service (wd:P729 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date or point in time on which a piece or class of equipment entered operational service, start time
2. date of promulgation, also known as enacted date, promulgation date, royal assent, date of assent, date signed (wd:P7589 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date on which a piece of legislation formally became law (whether by assent or some other procedure), point in time
3. created for, also known as cause of creation, commissioned for, made for, occasion, on the occasion of (wd:P9883 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): a work, event, etc. for which the subject work was created (e.g.... play was created for; a film that a screenplay was written for)
4. inception, also known as initial release date, founded in, founded on, founded on date, founding date (wd:P571 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): time when an entity begins to exist; for date of official opening use P1619, start time
5. effective date, also known as date of coming into force, date of commencement, enforcement date (wd:P7588 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date on which a statutory or administrative law or other officia...This may also be retrospective, predating the date of enactment., point in time
6. start time, also known as start date, since, valid, join time, joined (wd:P580 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): time an entity begins to exist or a statement starts being valid, point in time
7. announcement date, also known as released, date teased, made public on, public announcement date, published (wd:P6949 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): time of the first public presentation of a subject by the creator, of information by the media, point in time
8. UTC date of spacecraft landing, also known as landing time, time of spacecraft landing, spacecraft landing time, spacecraft landing date, landing date (wd:P620 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date of spacecraft landing in UTC
9. recording date, also known as recorded date, record date, recdate, rec. date, date of recording (wd:P10135 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): the date when a recording was made, inception
10. date of baptism, also known as christened, time of christening, time of baptism, date of christening, date of baptism in early childhood (wd:P1636 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date when a person was baptized. For times when only baptism rec...were available, this can be a good substitute for date of birth., start time

[Tool]
Got 60 rows and 3 columns, showing the first 5 and last 5 rows below:
| ship                         | serviceEntry                        | shipLabel          |
| ---------------------------- | ----------------------------------- | ------------------ |
| Thalassa B. (wd:Q86723585)   | 1939-01-01T00:00:00Z (xsd:dateTime) | Thalassa B. (en)   |
| wd:Q20111730                 | 1939-01-01T00:00:00Z (xsd:dateTime) |                    |
| wd:Q19380720                 | 1939-01-01T00:00:00Z (xsd:dateTime) |                    |
| Bastø II (wd:Q23042441)      | 1939-01-01T00:00:00Z (xsd:dateTime) | Bastø II (en)      |
| MS Fjorddrott (wd:Q19380688) | 1939-01-01T00:00:00Z (xsd:dateTime) | MS Fjorddrott (en) |
| ...                          | ...                                 | ...                |
| MS Fjordbris (wd:Q19380684)  | 1946-01-01T00:00:00Z (xsd:dateTime) | MS Fjordbris (en)  |
| Balaena (wd:Q11968302)       | 1946-01-01T00:00:00Z (xsd:dateTime) | Balaena (en)       |
| Ocean Star (wd:Q86723349)    | 1946-01-01T00:00:00Z (xsd:dateTime) | Ocean Star (en)    |
| Dixie (wd:Q86723402)         | 1946-01-01T00:00:00Z (xsd:dateTime) | Dixie (en)         |
| Talabot (wd:Q83647731)       | 1946-01-01T00:00:00Z (xsd:dateTime) | Talabot (en)       |

[Tool] Stopped generation process

[User]
Feedback (status=refine):
The query is mostly correct and retrieves Norwegian ships (wd:Q11446) with Norway as country of registry (wd:P8047 wd:Q20) that entered service between 1939 and 1946, returning their IRIs and service entry dates. However, there are two points for refinement:

1. The property 'country of registry' (P8047) may not always capture all ships that are Norwegian by operator, builder, or origin, especially for historical ships. Consider also including ships with 'country' (P17), 'operator' (P137), or 'flag' (P297) as Norway to ensure completeness.

2. The query currently requires the service entry date (P729) to be present. Some ships might have only 'in service' (P7666), 'commissioned' (P729), or similar properties. Consider using OPTIONAL for these properties and coalescing them if possible, or broadening the query to include alternative service entry properties.

3. The query returns labels only in English. For completeness, you might want to include Norwegian labels as well, or at least make the language filter optional.

Please refine the query to address these points for a more comprehensive and robust answer.

[Assistant]
Thank you for the feedback. Here’s my step-by-step plan for refinement:

1. Expand the definition of "Norwegian ship" to include not just country of registry (P8047), but also country (P17), operator (P137), and flag (P297) as Norway (wd:Q20).
2. Broaden the service entry date to include not just service entry (P729), but also "in service" (P7666) and "commissioned" (P729, already included), and coalesce these into a single date variable.
3. Make the label retrieval more flexible by including both English and Norwegian labels, or any available label.

First, I will search for the property "in service" to confirm its property ID.

[Tool]
Top 10 property alternatives:
1. service entry, also known as commissioned, time of service entry, service introduction, launch date, in service (wd:P729 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date or point in time on which a piece or class of equipment entered operational service, start time
2. in operation on service, also known as transport route of vehicle, transport route operated, transport route served, transport route serviced, used on route (wd:P10788 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): service that a vehicle is operating on
3. product or material produced, also known as products, product or service provided, product, material, or service produced or provided, product, producer of (wd:P1056 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): material or product produced or sold by an organization, industry, facility, or process, material or product produced by an organization, industry, facility, or process, immediate cause of
4. product, material, or service produced or provided, also known as products, product or service provided, product, material, or service produced or provided, product, output (wd:P1056 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): material or product produced or sold by an organization, industry, facility, or process, material or product produced by an organization, industry, facility, or process, immediate cause of
5. item operated, also known as fleet, item used, operated, operates, operator of (wd:P121 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): equipment, installation or service operated by the subject, uses
6. service life (wd:P5069 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): product's total life in use from the point of sale to the point of discard
7. intended public, also known as for, user group, target market, target group, target demographic (wd:P2360 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): this work, product, object or event is intended for, or has been designed to that person or group of people, animals, plants, etc
8. operator, also known as offered by, operated by, provided by, run by, service operator (wd:P137 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): person, profession, organization or entity that operates the equipment, facility, or service, used by
9. service retirement, also known as retired, time of service retirement, retirement, out of service, decommissioned (wd:P730 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date or point in time on which a piece or class of equipment was...from operational service ; use P2669 for end of a public service, end time
10. military branch, also known as unit branch, service branch, formation, branch (wd:P241 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): branch to which this military unit, award, office, or person belongs, e.g. Royal Navy, part of

[Tool]
Top 10 property alternatives:
1. service entry, also known as commissioned, time of service entry, service introduction, launch date, in service (wd:P729 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): date or point in time on which a piece or class of equipment entered operational service, start time
2. created for, also known as cause of creation, commissioned for, made for, occasion, on the occasion of (wd:P9883 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): a work, event, etc. for which the subject work was created (e.g.... play was created for; a film that a screenplay was written for)
3. commissioned by, also known as client, orderer, made for, commissioner, built for (wd:P88 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): person or organization that commissioned this work
4. commanded by, also known as captain, commander, commanding officer (wd:P4791 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): commander of a military unit/army/security service, operation, etc.
5. appointed by, also known as named by (wd:P748 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): who appointed the person to the office, can be used as a qualifier
6. inception, also known as initial release date, founded in, founded on, founded on date, founding date (wd:P571 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): time when an entity begins to exist; for date of official opening use P1619, start time
7. ratified by, also known as acceptance, accession, approval, ratification (wd:P6193 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): used to specify that a treaty has been ratified by a given state or subject of international law
8. issued by, also known as issuing body, issuing agent, issuer, identifier issuing body, identifier issued by (wd:P2378 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): organisation or other agent that issues or allocates an identifier, code, classification number, etc.
9. approved by, also known as erected by (wd:P790 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): item is approved by other item(s) [qualifier: statement is approved by other item(s)]
10. main building contractor, also known as contractor, general contractor, main contractor, prime contractor, constructed by (wd:P193 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): the main organization (or person) responsible for construction of this structure or building, manufacturer

[Tool]
Top 10 property alternatives:
1. flag, also known as flag description (wd:P163 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): subject's flag
2. symbol of, also known as emblem of, flag of, logo of, seal of, symbolises (wd:P8058 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): item of which the image is a symbol
3. flag image, also known as image flag, image of flag (wd:P41 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): image of the item's flag, image, flag
4. country of registry, also known as ship's flag, flag state, flag of convenience (wd:P8047 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): country where a ship is or has been registered, country
5. flag bearer (wd:P3022 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): person who carries the national flag of their country at an opening or closing ceremony
6. logo image, also known as masthead, wordmark, trademark, trade mark, sign (wd:P154 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): graphic mark or emblem commonly used by commercial enterprises, organizations and products, icon
7. coat of arms (wd:P237 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): subject's coat of arms
8. color, also known as with the colour, with the color, pigment, of the colour, of the color (wd:P462 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): color of subject
9. Flags of the World ID, also known as Flags of the World ID, FOTW ID (wd:P3089 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): identifier for a flag in the Flags of the World database
10. official color, also known as official colors, signature colors, signature color (wd:P6364 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): official colors chosen to represent or identify an item

[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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): most specific known birth location of a person, animal or fictional character, location
7. continent (wd:P30 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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 pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): 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. operator, also known as offered by, operated by, provided by, run by, service operator (wd:P137 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): person, profession, organization or entity that operates the equipment, facility, or service, used by
2. item operated, also known as fleet, item used, operated, operates, operator of (wd:P121 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): equipment, installation or service operated by the subject, uses
3. operations and procedures key (OPS), also known as OPS (wd:P1691 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): official classification of operational procedures
4. operating area, also known as province served, serves jurisdiction, serves geographic region, serves geographic area, serves area (wd:P2541 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): geographic area or jurisdiction an organisation or industry operates in, serves, or has responsibility for, location
5. opus number, also known as op. (wd:P10855 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): number that is assigned to a musical composition, or to a set of...to indicate the chronological order of the composer's production
6. operator licence number, also known as Traffic Commissioners for Great Britain operator license number, Traffic Commissioners for Great ... vehicle operator license number, vehicle operator licence number (wd:P9308 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): British heavy goods vehicle (HGV) and public service vehicle (PSV) operator license number
7. commanded by, also known as captain, commander, commanding officer (wd:P4791 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): commander of a military unit/army/security service, operation, etc.
8. agent of action, also known as being done by, initiator, initiated by, done by, doer (wd:P12995 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): particular item that initiates this action or class of actions
9. amateur radio callsign, also known as call sign, callsign, radio callsign (wd:P5143 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): callsign assigned to licensed Amateur Radio operator, station or satellite
10. call sign, also known as call letters, callsign, code letters (wd:P2317 as pq/prn/pqn/ps/p/wdt/psv/pr/wdtn/psn/prv/pqv): short form identifier for a radio operator or broadcaster and (as flag signal) previous for watercrafts

[Assistant]
We have confirmed the following properties and their IDs:
- ship: wd:Q11446
- Norway: wd:Q20
- country of registry: wdt:P8047
- country: wdt:P17
- operator: wdt:P137
- flag: wdt:P163
- service entry/commissioned: wdt:P729

There is no direct property "in service" for a date, but "service entry" (P729) is used for commissioning/service entry. We will use P729 and check for any additional relevant properties if needed.

For labels, we will retrieve all available labels and not restrict by language.

Now, I will construct a query that:
- Selects ships (wd:Q11446)
- That are Norwegian by any of: country of registry (P8047), country (P17), operator (P137), or flag (P163) = wd:Q20
- That have a service entry/commissioned date (P729) between 1939 and 1946
- Returns ship IRI, service entry date, and all available labels

Let's build and execute this refined query.

[Tool]
Got 186 rows and 3 columns, showing the first 5 and last 5 rows below:
| ship                      | serviceEntry                        | label                   |
| ------------------------- | ----------------------------------- | ----------------------- |
| Kvalsund I (wd:Q12716671) | 1939-01-01T00:00:00Z (xsd:dateTime) | Kvalsund I (en)         |
| Nikos S. (wd:Q86722770)   | 1939-01-01T00:00:00Z (xsd:dateTime) | Nikos S. (pap)          |
| wd:Q11987366              | 1939-01-01T00:00:00Z (xsd:dateTime) | MF «Suldalsporten» (nb) |
| MS Bess (wd:Q11987498)    | 1939-01-01T00:00:00Z (xsd:dateTime) | Bess (de)               |
| MS Bess (wd:Q11987498)    | 1939-01-01T00:00:00Z (xsd:dateTime) | Bess (nds)              |
| ...                       | ...                                 | ...                     |
| Ocean Star (wd:Q86723349) | 1946-01-01T00:00:00Z (xsd:dateTime) | Ocean Star (de)         |
| Ocean Star (wd:Q86723349) | 1946-01-01T00:00:00Z (xsd:dateTime) | «Ocean Star» (nb)       |
| Balaena (wd:Q11968302)    | 1946-01-01T00:00:00Z (xsd:dateTime) | バリーナ (ja)               |
| Balaena (wd:Q11968302)    | 1946-01-01T00:00:00Z (xsd:dateTime) | Balaena (en)            |
| Balaena (wd:Q11968302)    | 1946-01-01T00:00:00Z (xsd:dateTime) | Balaena (pap)           |

[Tool] Stopped generation process

[User]
Feedback (status=done):
The SPARQL query is well-constructed and follows all the required guidelines. It retrieves the IRIs of Norwegian ships (by various relevant properties) that entered operational service between 1939 and 1946, along with their service entry dates. Labels are included optionally, as appropriate. The query does not use any non-standard SPARQL features and does not perform any post-processing outside SPARQL. The answer is complete and correct for the user's question.


PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
SELECT ?poem ?poemLabel WHERE {
  ?poem wdt:P31 wd:Q5185279 .
  ?poem wdt:P6216 wd:Q19652 .
  FILTER NOT EXISTS {
    ?poem wdt:P51 ?audio
  }
  {
    ?poem wdt:P407 wd:Q1860 .
  } UNION {
    FILTER NOT EXISTS {
      ?poem wdt:P407 ?lang
    }
  }
  OPTIONAL {
    ?poem rdfs:label ?poemLabel FILTER ( lang( ?poemLabel ) = "en" )
  }
}
LIMIT 20

Got 20 rows and 2 columns, showing the first 5 and last 5 rows below:
| poem                                 | poemLabel                 |
| ------------------------------------ | ------------------------- |
| Death’s Ramble (wd:Q100774453)       | Death’s Ramble (en)       |
| Gerontion (wd:Q10289249)             | Gerontion (en)            |
| Endimion & Phœbe (wd:Q104450438)     | Endimion & Phœbe (en)     |
| Junior Yell (wd:Q104451306)          | Junior Yell (en)          |
| Philadelphia Rosary (wd:Q104591336)  | Philadelphia Rosary (en)  |
| ...                                  | ...                       |
| The Lord of Burleigh (wd:Q117327522) | The Lord of Burleigh (en) |
| The Bugle Song (wd:Q117327530)       | The Bugle Song (en)       |
| The Song in Camp (wd:Q117327533)     | The Song in Camp (en)     |
| Song.—The Owl (wd:Q117327586)        | Song.—The Owl (en)        |
| Little Things (wd:Q117328017)        | Little Things (en)        |

These are examples of poems that are in the public domain, either in English or with no specified language, and do not have an audio recording: Death’s Ramble, Gerontion, Endimion & Phœbe, Junior Yell, Philadelphia Rosary, The Lord of Burleigh, The Bugle Song, The Song in Camp, Song.—The Owl, Little Things, and others.

[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] Which poems are in the public domain, either in English or with no specified language, and do not have an audio recording?

[Assistant]
Let's break down the question:

1. We are looking for "poems" (so we need to identify the entity for "poem").
2. The poems must be in the public domain.
3. The language of the poem should be either English or unspecified.
4. The poems should not have an audio recording.

Step 1: Identify the entity for "poem" in Wikidata. I'll search for "poem".

[Tool]
Top 10 entity alternatives:
1. poem, also known as poems, poetry (wd:Q5185279): form of literature, work of poetry, often composed of verses
2. long poem, also known as poem (wd:Q1782649): poetry genre, poetic form
3. NPNT, also known as EGFL6L, nephronectin, POEM (wd:Q18053814): protein-coding gene in the species Homo sapiens
4. poem (wd:Q19415001): poem written by Mostafa Saadeq Al-Rafe'ie
5. Poem, also known as Poetry (wd:Q19423189): Poem written by Abdullah ibn al-Mu'tazz
6. Poem (wd:Q7207343): song by nu metal band Taproot
7. Poem (wd:Q7207339): album by industrial/electronic music group Delerium
8. Poem (wd:Q56525947): Greek band
9. Poem (wd:Q2893205): 1981 album by Bridges
10. The Summer Moon, also known as Poem (wd:Q19100286): 1912

[Assistant]
The most general entity for "poem" as a literary form is wd:Q5185279.

Next, let's identify the property for "public domain" status. I'll search for properties related to "public domain".

[Tool]
Top 10 property alternatives:
1. public domain date, also known as copyright end date, PD date (wd:P3893 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): date the item enters into the public domain in a jurisdiction
2. copyright status, also known as copyrighted, copyright restriction (wd:P6216 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): copyright status for intellectual creations like works of art, publications, software, etc.
3. after a work by, also known as inspirational artist, inspiring artist, copy of a work by, based on a work by, artist who inspired this (wd:P1877 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): artist whose work strongly inspired / was copied in this item, significant person
4. notable work, also known as artwork, wrote, writer of, works, work (wd:P800 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): notable scientific, artistic or literary work, or other work of significance among subject's works
5. copyright status as a creator, also known as statut des droits d'auteur du createur, copyright status of creator's works, copyright status as creator, copyright status of works (wd:P7763 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): states if the body of work published during the lifetime of this creator is still copyrighted or in the public domain
6. copyright holder, also known as licensor, proprietor, copyright owner, copyright ‘owner’ (wd:P3931 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): person or organisation who holds the copyright of a work according to the Berne Convention, owned by
7. catalog, also known as catalogue, registry, exhibition catalogue, cat. (wd:P972 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): catalog for the item, or, as a qualifier of P528 – catalog for which the 'catalog code' is valid, part of
8. derivative work, also known as is source work of, is adapted as, is the basis for, iteration, reboot (wd:P4969 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): new work of art (film, book, software, etc.) derived from major part of this work
9. LIBRIS editions (wd:P1182 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): the identifier for the items in the LIBRIS-catalog of the Royal Swedish Library about specific publications
10. phonographic copyright, also known as ℗, (P) (wd:P12456 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): person or organization that holds the phonographic copyright

[Assistant]
The most relevant properties are:
- copyright status (wdt:P6216)
- public domain date (wdt:P3893)
- copyright status as a creator (wdt:P7763)

For individual works, "copyright status" (wdt:P6216) is likely the best fit. Let's check what values are used for "public domain" with this property.

[Tool]
Got 65,536 rows and 3 columns, showing the first 10 rows below:
| subject                                     | property                     | object                                                                         |
| ------------------------------------------- | ---------------------------- | ------------------------------------------------------------------------------ |
| The Bohemian (wd:Q1000128)                  | copyright status (wdt:P6216) | public domain (wd:Q19652)                                                      |
| Dutch Wikipedia (wd:Q10000)                 | copyright status (wdt:P6216) | copyrighted (wd:Q50423863)                                                     |
| Anne et Mary femmes pirates (wd:Q101145254) | copyright status (wdt:P6216) | unknown (wd:Q24238356)                                                         |
| Twemoji (wd:Q100601019)                     | copyright status (wdt:P6216) | copyrighted, dedicated to the public domain by copyright holder (wd:Q88088423) |
| Make no Law (wd:Q101093716)                 | copyright status (wdt:P6216) | not yet determined (wd:Q59496158)                                              |
| Biasmando laudate (wd:Q100054468)           | copyright status (wdt:P6216) | public domain (wd:Q19652)                                                      |
| Biasmando laudate (wd:Q100056388)           | copyright status (wdt:P6216) | public domain (wd:Q19652)                                                      |
| Un Arcivescovo (wd:Q100058448)              | copyright status (wdt:P6216) | public domain (wd:Q19652)                                                      |
| Un Arcivescovo (wd:Q100059791)              | copyright status (wdt:P6216) | public domain (wd:Q19652)                                                      |
| wd:Q100065020                               | copyright status (wdt:P6216) | public domain (wd:Q19652)                                                      |
| ...                                         | ...                          | ...                                                                            |

[Assistant]
The value for "public domain" is wd:Q19652 when used with "copyright status" (wdt:P6216).

Next, let's identify the property for "language" and the entity for "English". I'll search for the property "language".

[Tool]
Top 10 property alternatives:
1. programmed in, also known as language, programming language, written in (wd:P277 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): the programming language(s) in which the software is developed
2. languages spoken, written or signed, also known as language of expression, language, wrote language, writes language, uses language (wd:P1412 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): language(s) that a person or a people speaks, writes or signs, including the native language(s)
3. language of work or name, also known as language of the reference, language of URL, language of website, language of work, named in language (wd:P407 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): language associated with this creative work (such as books, show...guage" (P103) and "languages spoken, written or signed" (P1412))
4. official language, also known as language spoken, spoken in, speaking, language official (wd:P37 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): language designated as official by this item, language used
5. language used, also known as languages used, medium of instruction, used language, uses language, working language (wd:P2936 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): language widely used (spoken or written) in this place or at this event or organisation
6. language style, also known as manner, term register, obsolete, register, sense register (wd:P6191 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): to denote of the way a sense of a word is used, e.g., slang, vulgarism, babytalk, colloquialism, etc.
7. native language, also known as first language, L1 speaker of, language native, mother tongue (wd:P103 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): language or languages a person has learned from early childhood, languages spoken, written or signed
8. writing language, also known as languages of writings, languages written, language written, writing languages, language of works (wd:P6886 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): language in which the writer has written their work, languages spoken, written or signed
9. Ethnologue language status, also known as EGIDS, language status (wd:P3823 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): language status identifier by Ethnologue.com using EGIDS scale
10. variety of lexeme, form or sense, also known as dialect, used in dialect, variety of form (wd:P7481 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): dialect, graphic or phonetic variety that this lexeme, form or sense is used in

[Assistant]
The property "language of work or name" (wdt:P407) is appropriate for specifying the language of a poem.

Now, let's find the entity for "English" as a language.

[Tool]
Top 10 entity alternatives:
1. English, also known as English language, English-language, English the Global Language, English (language), The English language (wd:Q1860): West Germanic language
2. English, also known as English (language), The English language, English the Global Language, English-language, English language (wd:Q1860): West Germanic language
3. English studies, also known as English philology, English major, English language and literature, English (academic discipline), English language (wd:Q27968): discipline that studies the English language and literature
4. English (language) (wd:L612759-S1)
5. English language (wd:L1143009-S1)
6. English language (wd:L38261-S1)
7. English language (wd:L406961-S1)
8. English language (wd:L482179-S2)
9. English language (wd:L590787-S1)
10. English language (wd:L643398-S2)

[Assistant]
The entity for the English language is wd:Q1860.

Now, we need to find poems that either:
- have wdt:P407 (language of work or name) wd:Q1860 (English), or
- do not have a specified language (i.e., no wdt:P407 triple).

Next, let's identify the property for "audio recording". I'll search for "audio recording".

[Tool]
Top 10 property alternatives:
1. audio, also known as audio file, audio recording, audio sample, recording, song (wd:P51 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): relevant sound. If available, use a more specific property. Samples: "spoken text audio" (P989), "pronunciation audio" (P443)
2. audio recording of the subject's spoken voice, also known as voice recording, audio clip, spoken voice, speaking voice, recording of the subject's spoken voice (wd:P990 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): audio file representing the speaking voice of a person; or of an animated cartoon or other fictitious character, audio
3. recordist, also known as audio recorder, audio recordist, recorded by, video recorder, video recordist (wd:P10893 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): the person or other agent who recorded the audio and/or video for this file
4. recording or performance of, also known as performance of, performance or recording of, recording of (wd:P2550 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): item is a recording or release of this composition
5. performer, also known as actor, sung by, singer, recording by, recorded by (wd:P175 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): actor, musician, band or other performer associated with this role or musical work, contributor to the creative work or subject
6. captured with, also known as camera used, taken with, recording device, recorded with, photographed with (wd:P4082 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): equipment (e.g. model of camera, lens, microphone), used to capture this image, video, audio, or data
7. audio transcription, also known as transcription of audio (wd:P9533 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): transcription of the word/text being spoken in this file
8. recording location, also known as recorded at (wd:P8546 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): location where a media item (sound, video, etc.) was recorded, significant place
9. audio system, also known as audio format (wd:P7501 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): audio system hardware used in the item
10. media legend, also known as video legend, video description, video caption, caption, media description (wd:P2096 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): qualifier to describe the media of the statement. This avoids le...the media is defined at Wikidata. For the date, use P585 instead

[Assistant]
The property "audio" (wdt:P51) is the most general for an audio recording of a work.

Now, let's summarize the requirements for the SPARQL query:
- The item is an instance of "poem" (wd:Q5185279).
- The item has copyright status "public domain" (wdt:P6216 wd:Q19652).
- The item either has language of work or name (wdt:P407) English (wd:Q1860) or does not have a wdt:P407 statement.
- The item does NOT have an audio recording (no wdt:P51 triple).

Let's construct the SPARQL query accordingly.

[Tool]
Failed to call function execute:
failed to parse input: parse error at position 152 for token PNAME_LN with content 'wdt:P407' (the input most likely does not follow the grammar)

[Assistant]
It looks like the query failed due to the use of FILTER with NOT EXISTS and logical OR (||) inside. In SPARQL, we should use UNION for OR conditions and separate NOT EXISTS for the absence of a property.

Let's reconstruct the query using UNION for the language condition, and use NOT EXISTS for the absence of audio. I'll also add OPTIONAL for labels for better readability.

Here's the revised approach:
- Select poems that are public domain.
- For language, use a UNION: (a) those with English, (b) those with no language specified.
- Exclude those with an audio recording.

I'll try this structure.

[Tool]
Got 20 rows and 1 column, showing the first 5 and last 5 rows below:
| poem                                 |
| ------------------------------------ |
| Death’s Ramble (wd:Q100774453)       |
| Gerontion (wd:Q10289249)             |
| Endimion & Phœbe (wd:Q104450438)     |
| Junior Yell (wd:Q104451306)          |
| Philadelphia Rosary (wd:Q104591336)  |
| ...                                  |
| The Lord of Burleigh (wd:Q117327522) |
| The Bugle Song (wd:Q117327530)       |
| The Song in Camp (wd:Q117327533)     |
| Song.—The Owl (wd:Q117327586)        |
| Little Things (wd:Q117328017)        |

[Tool]
Got 20 rows and 2 columns, showing the first 5 and last 5 rows below:
| poem                                 | poemLabel                 |
| ------------------------------------ | ------------------------- |
| Death’s Ramble (wd:Q100774453)       | Death’s Ramble (en)       |
| Gerontion (wd:Q10289249)             | Gerontion (en)            |
| Endimion & Phœbe (wd:Q104450438)     | Endimion & Phœbe (en)     |
| Junior Yell (wd:Q104451306)          | Junior Yell (en)          |
| Philadelphia Rosary (wd:Q104591336)  | Philadelphia Rosary (en)  |
| ...                                  | ...                       |
| The Lord of Burleigh (wd:Q117327522) | The Lord of Burleigh (en) |
| The Bugle Song (wd:Q117327530)       | The Bugle Song (en)       |
| The Song in Camp (wd:Q117327533)     | The Song in Camp (en)     |
| Song.—The Owl (wd:Q117327586)        | Song.—The Owl (en)        |
| Little Things (wd:Q117328017)        | Little Things (en)        |

[Tool] Stopped generation process

[User]
Feedback (status=done):
The SPARQL query correctly implements the requirements: it selects poems that are in the public domain, are either in English or have no specified language, and do not have an audio recording. The query returns the IRIs of the poems and optionally their English labels. The answer and the query are both correct and complete for the user's question.


PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX p: <http://www.wikidata.org/prop/>
PREFIX ps: <http://www.wikidata.org/prop/statement/>
PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
SELECT ?country ?countryLabel ?capital ?capitalLabel WHERE {
  ?country wdt:P31 wd:Q3624078 .
  ?country p:P36 ?capitalStatement .
  ?capitalStatement ps:P36 ?capital .
  FILTER NOT EXISTS {
    ?capitalStatement pq:P582 ?end
  }
  OPTIONAL {
    ?country rdfs:label ?countryLabel FILTER ( LANG( ?countryLabel ) = "en" )
  }
  OPTIONAL {
    ?capital rdfs:label ?capitalLabel FILTER ( LANG( ?capitalLabel ) = "en" )
  }
}
ORDER BY ?countryLabel

Got 210 rows and 4 columns, showing the first 5 and last 5 rows below:
| country               | countryLabel     | capital                     | capitalLabel          |
| --------------------- | ---------------- | --------------------------- | --------------------- |
| Afghanistan (wd:Q889) | Afghanistan (en) | Kabul (wd:Q5838)            | Kabul (en)            |
| Albania (wd:Q222)     | Albania (en)     | Tirana (wd:Q19689)          | Tirana (en)           |
| Algeria (wd:Q262)     | Algeria (en)     | Algiers (wd:Q3561)          | Algiers (en)          |
| Andorra (wd:Q228)     | Andorra (en)     | Andorra la Vella (wd:Q1863) | Andorra la Vella (en) |
| Angola (wd:Q916)      | Angola (en)      | Luanda (wd:Q3897)           | Luanda (en)           |
| ...                   | ...              | ...                         | ...                   |
| Vietnam (wd:Q881)     | Vietnam (en)     | Hanoi (wd:Q1858)            | Hanoi (en)            |
| Yemen (wd:Q805)       | Yemen (en)       | Sanaa (wd:Q2471)            | Sanaa (en)            |
| Yemen (wd:Q805)       | Yemen (en)       | Aden (wd:Q131694)           | Aden (en)             |
| Zambia (wd:Q953)      | Zambia (en)      | Lusaka (wd:Q3881)           | Lusaka (en)           |
| Zimbabwe (wd:Q954)    | Zimbabwe (en)    | Harare (wd:Q3921)           | Harare (en)           |

The query returns all sovereign states and their current capitals (excluding those with an end date), including labels for both countries and capitals, ordered by country label.

[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 countries and their capitals for all sovereign states, excluding those where the capital has an end date? Please include the labels for both the countries and their capitals and order by country label.

[Assistant]
Let's break down the question:

1. We need all sovereign states (countries).
2. For each, we want the capital city.
3. Exclude cases where the capital has an end date (i.e., only current capitals).
4. Include labels for both countries and capitals.
5. Order by country label.

Step 1: Find the entity for "sovereign state".
Step 2: Find the property for "capital".
Step 3: Find how to check for an end date qualifier on the capital statement.
Step 4: Build the query with OPTIONAL for labels and filter out capitals with an end date.

Let's proceed step by step.

First, search for the entity "sovereign state".

[Tool]
Top 10 entity alternatives:
1. sovereign state, also known as country, nation, sovereign country, sovereign nation, Westphalian state (wd:Q3624078): state that has the highest authority over a territory
2. country, also known as host country, state, sovereign state, land (wd:P17): sovereign state that this item is in (not to be used for human beings)
3. sovereign state (wd:L642577-S2)
4. Westphalian sovereignty, also known as state sovereignty, Westphalian system (wd:Q442402): concept of the sovereignty of nation-states in Europe
5. state sovereignty, also known as national sovereignty (wd:Q56350990)
6. The Sovereign State (wd:Q7765603): book by Anthony Sampson
7. China (sovereign state) (wd:L1012856-S1)
8. state (sovereign polity) (wd:L1216603-S1)
9. state (sovereign polity) (wd:L1220881-S1)
10. State Sovereignty Day (wd:Q130322685): Day commemorated in honor of the restoration of the sovereignty of the Republic of Azerbaijan following the Anti-Terror Operation

[Assistant]
The entity for "sovereign state" is wd:Q3624078.

Next, let's find the property for "capital".

[Tool]
Top 10 property alternatives:
1. capital of, also known as national capital of, parish seat of, provincial capital of, seat of, state capital (wd:P1376 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): country, state, department, canton or other administrative division of which the municipality is the governmental seat, located in the administrative territorial entity
2. capital, also known as administrative seat, seat of government, seat, principal place, location of capital (wd:P36 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): seat of government of a country, province, state or other type of administrative territorial entity
3. capital cost, also known as budget, cost, unit cost (wd:P2130 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): amount of money spent on building or producing an object
4. authorised capital, also known as authorized capital (wd:P12651 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): maximum amount of share capital that the company is authorised to issue to shareholders
5. number of matches played/races/starts, also known as gp, starts, races, number of games played, mp (wd:P1350 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): matches or games a player or a team played during an event. Also...matches a player officially appeared in during the whole career.
6. uses capitalization for, also known as capitalises, capitalizes, uses capitalisation for (wd:P6106 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): lexical classes and subclasses of words as well as other uses in the language where the first letter is written as a capital letter
7. market capitalization, also known as market cap, market capitalisation (wd:P2226 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): total value of issued shares by a publicly traded company
8. location, also known as neighbourhood, whereabouts, vilage, venue, town (wd:P276 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/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
9. 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 pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/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
10. nominal share capital (wd:P8247 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): total of the nominal values of the issued ordinary and preference shares of the entity

[Assistant]
The property for "capital" is wdt:P36.

Now, we need to find how to get all sovereign states (wd:Q3624078) and their capitals (wdt:P36), but only for current capitals (i.e., where the capital statement does NOT have an end date qualifier).

Let's check what property is used for "end date" on statements, so we can filter out capitals with an end date.

[Tool]
Top 10 property alternatives:
1. dissolved, abolished or demolished date, also known as ended, publication end date, final issue, date repealed, final year (wd:P576 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): point in time at which the subject (organisation, building) ceas...g equipment,  "discontinued date" (P2669) for stopping a product, end time
2. end time, also known as ends, stop time, endtime, fall date, ineffective (wd:P582 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): moment when an entity ceases to exist and a statement stops being entirely valid or no longer be true, point in time
3. date of death, also known as DOD, deathdate, died, died on, year of death (wd:P570 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): dissolved, abolished or demolished date, date on which the subject died, end time
4. latest date, also known as terminus ante quem, prior to, on or before this date, no later than, max date (wd:P1326 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): latest possible time that something could have occurred. Use as qualifier for other date properties
5. earliest end date, also known as end date (earliest) (wd:P8554 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): (qualifier) earliest date on which the statement could have begun to no longer be true, earliest date, end time
6. work period (end), also known as floruit end, floruit (end of work), flourished (end), retirement, work ends (wd:P2032 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): end of period during which a person or group flourished (fl. = "floruit") in their professional activity, end time, floruit
7. date of official closure, also known as closed, official closure, date of closure, closure date, closing date (wd:P3999 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): date of official closure of a building or event, end time
8. end of covered period, also known as coverage end date, covered period end (wd:P7104 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): end of period covered by an archive set, a historical book, or a collection
9. end period, also known as until period (wd:P3416 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): last period in which the statement is still valid (including the period-value)
10. earliest date, also known as no earlier than, terminus post quem, start date (earliest), on or after this date, minimum date (wd:P1319 as pqv/psn/psv/p/prn/prv/ps/wdtn/pq/pqn/pr/wdt): earliest date at which an event could have happened. Use as qualifier for other date properties

[Assistant]
The most likely property for "end date" as a qualifier is "end time" (wd:P582).

Now, let's check how the capital property (P36) is used on sovereign states, and how the end time qualifier appears, so we can filter them out. I'll list a few triples for a sovereign state (e.g., France, wd:Q142) with the capital property.

[Tool]
Got 10 rows and 3 columns:
| subject          | property        | object                                      |
| ---------------- | --------------- | ------------------------------------------- |
| France (wd:Q142) | capital (p:P36) | s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 |
| France (wd:Q142) | capital (p:P36) | s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 |
| France (wd:Q142) | capital (p:P36) | s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a |
| France (wd:Q142) | capital (p:P36) | s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 |
| France (wd:Q142) | capital (p:P36) | s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 |
| France (wd:Q142) | capital (p:P36) | s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 |
| France (wd:Q142) | capital (p:P36) | s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 |
| France (wd:Q142) | capital (p:P36) | s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 |
| France (wd:Q142) | capital (p:P36) | s:q142-BBD442C6-E5D6-465D-ABD6-A23C8B08035D |
| France (wd:Q142) | capital (p:P36) | s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa |

[Tool]
Got 9 rows and 3 columns:
| subject                                     | property                       | object                                               |
| ------------------------------------------- | ------------------------------ | ---------------------------------------------------- |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | start time (pq:P580)           | 1942-01-01T00:00:00Z (xsd:dateTime)                  |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | end time (pq:P582)             | 1944-01-01T00:00:00Z (xsd:dateTime)                  |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | capital (ps:P36)               | Algiers (wd:Q3561)                                   |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | valid in period (pq:P1264)     | French Committee of National Liberation (wd:Q565213) |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | nature of statement (pq:P5102) | wd:Q712144                                           |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | wikibase:rank                  | wikibase:NormalRank                                  |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | rdf:type                       | wikibase:Statement                                   |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | start time (pqv:P580)          | v:820b120a51614d52a3a062475c520638                   |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | end time (pqv:P582)            | v:3d7d4f5516359e6b078e527668101add                   |

[Tool]
Got 11 rows and 3 columns, showing the first 10 rows below:
| subject                                     | property                       | object                                 |
| ------------------------------------------- | ------------------------------ | -------------------------------------- |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | start time (pq:P580)           | 1940-07-01T00:00:00Z (xsd:dateTime)    |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | end time (pq:P582)             | 1944-08-20T00:00:00Z (xsd:dateTime)    |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | capital (ps:P36)               | Vichy (wd:Q93351)                      |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | has cause (pq:P828)            | Armistice of 22 June 1940 (wd:Q170360) |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | end cause (pq:P1534)           | Liberation of France (wd:Q697829)      |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | valid in period (pq:P1264)     | Vichy France (wd:Q69808)               |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | nature of statement (pq:P5102) | wd:Q712144                             |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | wikibase:rank                  | wikibase:NormalRank                    |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | rdf:type                       | wikibase:Statement                     |
| s:Q142-39d55134-4620-32cc-5c61-e8f6417511a8 | start time (pqv:P580)          | v:d1301eba94b91c5dfdaccd672bdda3ba     |
| ...                                         | ...                            | ...                                    |

[Tool]
Got 11 rows and 3 columns, showing the first 10 rows below:
| subject                                     | property                       | object                                                     |
| ------------------------------------------- | ------------------------------ | ---------------------------------------------------------- |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | start time (pq:P580)           | 1944-06-01T00:00:00Z (xsd:dateTime)                        |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | end time (pq:P582)             | 1944-09-01T00:00:00Z (xsd:dateTime)                        |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | capital (ps:P36)               | Bayeux (wd:Q183910)                                        |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | has cause (pq:P828)            | Normandy landings (wd:Q16470)                              |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | end cause (pq:P1534)           | Liberation of Paris (wd:Q696835)                           |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | valid in period (pq:P1264)     | Provisional Government of the French Republic (wd:Q783684) |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | nature of statement (pq:P5102) | wd:Q712144                                                 |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | wikibase:rank                  | wikibase:NormalRank                                        |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | rdf:type                       | wikibase:Statement                                         |
| s:Q142-8af3d4a0-48c9-0bdf-39b6-e037a49ed798 | start time (pqv:P580)          | v:19c3015b0ec72997cc66b0f61042bd58                         |
| ...                                         | ...                            | ...                                                        |

[Tool]
Got 10 rows and 3 columns:
| subject                                     | property                       | object                              |
| ------------------------------------------- | ------------------------------ | ----------------------------------- |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | start time (pq:P580)           | 1940-06-10T00:00:00Z (xsd:dateTime) |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | end time (pq:P582)             | 1940-06-13T00:00:00Z (xsd:dateTime) |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | capital (ps:P36)               | Tours (wd:Q288)                     |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | has cause (pq:P828)            | Battle of France (wd:Q151340)       |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | end cause (pq:P1534)           | Battle of France (wd:Q151340)       |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | nature of statement (pq:P5102) | wd:Q712144                          |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | wikibase:rank                  | wikibase:NormalRank                 |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | rdf:type                       | wikibase:Statement                  |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | start time (pqv:P580)          | v:cd17f2b299140b1621df1b1b66a17690  |
| s:Q142-cec5d409-4862-15a8-7855-d61dc4f500fa | end time (pqv:P582)            | v:e43b545325b9053923d228bedf30fe67  |

[Tool]
Got 11 rows and 3 columns, showing the first 10 rows below:
| subject                                     | property                       | object                                               |
| ------------------------------------------- | ------------------------------ | ---------------------------------------------------- |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | start time (pq:P580)           | 1940-06-01T00:00:00Z (xsd:dateTime)                  |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | end time (pq:P582)             | 1942-01-01T00:00:00Z (xsd:dateTime)                  |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | capital (ps:P36)               | London (wd:Q84)                                      |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | has cause (pq:P828)            | Appeal of 18 June (wd:Q2078515)                      |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | end cause (pq:P1534)           | French Committee of National Liberation (wd:Q565213) |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | valid in period (pq:P1264)     | French National Committee (wd:Q2985550)              |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | nature of statement (pq:P5102) | wd:Q712144                                           |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | wikibase:rank                  | wikibase:NormalRank                                  |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | rdf:type                       | wikibase:Statement                                   |
| s:Q142-5fb9be18-4dd3-fd67-ab4b-6f4fbbbb78b8 | start time (pqv:P580)          | v:a5e84525793270d5ba01c1cc5e7c495e                   |
| ...                                         | ...                            | ...                                                  |

[Tool]
Got 10 rows and 3 columns:
| subject                                     | property                       | object                              |
| ------------------------------------------- | ------------------------------ | ----------------------------------- |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | start time (pq:P580)           | 1871-01-01T00:00:00Z (xsd:dateTime) |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | end time (pq:P582)             | 1879-01-01T00:00:00Z (xsd:dateTime) |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | capital (ps:P36)               | Versailles (wd:Q621)                |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | has cause (pq:P828)            | Paris Commune (wd:Q133132)          |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | valid in period (pq:P1264)     | French Third Republic (wd:Q70802)   |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | nature of statement (pq:P5102) | wd:Q712144                          |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | wikibase:rank                  | wikibase:NormalRank                 |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | rdf:type                       | wikibase:Statement                  |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | start time (pqv:P580)          | v:7a04aaa07b75f6f29ee64d5b71d75949  |
| s:Q142-07970cdf-4187-f428-6e8e-af156a5da844 | end time (pqv:P582)            | v:b4370f2663eed9ea076353243ccd2d22  |

[Tool]
Got 10 rows and 3 columns:
| subject                                     | property                       | object                                               |
| ------------------------------------------- | ------------------------------ | ---------------------------------------------------- |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | start time (pq:P580)           | 1940-01-01T00:00:00Z (xsd:dateTime)                  |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | end time (pq:P582)             | 1942-01-01T00:00:00Z (xsd:dateTime)                  |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | capital (ps:P36)               | Brazzaville (wd:Q3844)                               |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | end cause (pq:P1534)           | French Committee of National Liberation (wd:Q565213) |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | valid in period (pq:P1264)     | French Civil and Military High Command (wd:Q2367720) |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | nature of statement (pq:P5102) | wd:Q712144                                           |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | wikibase:rank                  | wikibase:NormalRank                                  |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | rdf:type                       | wikibase:Statement                                   |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | start time (pqv:P580)          | v:8265d15eef883c07a3d4e329b2c3d8f6                   |
| s:Q142-1183d06d-4e4b-99c8-8452-4808cb66409a | end time (pqv:P582)            | v:820b120a51614d52a3a062475c520638                   |

[Tool]
Got 14 rows and 3 columns, showing the first 10 rows below:
| subject                                     | property                       | object                                    |
| ------------------------------------------- | ------------------------------ | ----------------------------------------- |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | start time (pq:P580)           | 1682-01-01T00:00:00Z (xsd:dateTime)       |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | end time (pq:P582)             | 1789-10-05T00:00:00Z (xsd:dateTime)       |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | capital (ps:P36)               | Versailles (wd:Q621)                      |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | has cause (pq:P828)            | Louis XIV of France (wd:Q7742)            |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | end cause (pq:P1534)           | Women's March on Versailles (wd:Q1151917) |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | valid in period (pq:P1264)     | Louis XIV of France (wd:Q7742)            |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | nature of statement (pq:P5102) | wd:Q29509043                              |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | wikibase:rank                  | wikibase:NormalRank                       |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | rdf:type                       | wikibase:Statement                        |
| s:Q142-22d71d7a-485b-05ce-ab57-10c674a8aa93 | start time (pqv:P580)          | v:cd0506fde652bf9b31a281cab1288294        |
| ...                                         | ...                            | ...                                       |

[Tool] Got no rows and 3 columns

[Tool]
Got 10 rows and 3 columns:
| subject                                     | property                       | object                                 |
| ------------------------------------------- | ------------------------------ | -------------------------------------- |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | start time (pq:P580)           | 1940-06-14T00:00:00Z (xsd:dateTime)    |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | end time (pq:P582)             | 1940-06-28T00:00:00Z (xsd:dateTime)    |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | capital (ps:P36)               | Bordeaux (wd:Q1479)                    |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | has cause (pq:P828)            | Battle of France (wd:Q151340)          |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | end cause (pq:P1534)           | Armistice of 22 June 1940 (wd:Q170360) |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | nature of statement (pq:P5102) | wd:Q712144                             |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | wikibase:rank                  | wikibase:NormalRank                    |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | rdf:type                       | wikibase:Statement                     |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | start time (pqv:P580)          | v:565ef8c071efc661f12b808afc428e49     |
| s:Q142-5eea8e7e-40a8-5f78-0a0e-d4091a1d3c74 | end time (pqv:P582)            | v:be7660078e3572162574877edd1b5644     |

[Tool]
Got 1 row and 3 columns:
| subject                                     | property         | object             |
| ------------------------------------------- | ---------------- | ------------------ |
| s:Q142-05cdde65-43a9-c172-43c9-3b470a1767f0 | capital (ps:P36) | Algiers (wd:Q3561) |

[Tool]
Got 1 row and 3 columns:
| subject          | property          | object         |
| ---------------- | ----------------- | -------------- |
| France (wd:Q142) | capital (wdt:P36) | Paris (wd:Q90) |

[Tool]
Got 198 rows and 3 columns, showing the first 10 rows below:
| subject                | property              | object                        |
| ---------------------- | --------------------- | ----------------------------- |
| United States (wd:Q30) | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| Turkey (wd:Q43)        | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| Russia (wd:Q159)       | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| Japan (wd:Q17)         | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| Italy (wd:Q38)         | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| France (wd:Q142)       | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| Germany (wd:Q183)      | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| Finland (wd:Q33)       | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| Mexico (wd:Q96)        | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| India (wd:Q668)        | instance of (wdt:P31) | sovereign state (wd:Q3624078) |
| ...                    | ...                   | ...                           |

[Tool]
Got 210 rows and 4 columns, showing the first 5 and last 5 rows below:
| country               | countryLabel     | capital                     | capitalLabel          |
| --------------------- | ---------------- | --------------------------- | --------------------- |
| Afghanistan (wd:Q889) | Afghanistan (en) | Kabul (wd:Q5838)            | Kabul (en)            |
| Albania (wd:Q222)     | Albania (en)     | Tirana (wd:Q19689)          | Tirana (en)           |
| Algeria (wd:Q262)     | Algeria (en)     | Algiers (wd:Q3561)          | Algiers (en)          |
| Andorra (wd:Q228)     | Andorra (en)     | Andorra la Vella (wd:Q1863) | Andorra la Vella (en) |
| Angola (wd:Q916)      | Angola (en)      | Luanda (wd:Q3897)           | Luanda (en)           |
| ...                   | ...              | ...                         | ...                   |
| Vietnam (wd:Q881)     | Vietnam (en)     | Hanoi (wd:Q1858)            | Hanoi (en)            |
| Yemen (wd:Q805)       | Yemen (en)       | Sanaa (wd:Q2471)            | Sanaa (en)            |
| Yemen (wd:Q805)       | Yemen (en)       | Aden (wd:Q131694)           | Aden (en)             |
| Zambia (wd:Q953)      | Zambia (en)      | Lusaka (wd:Q3881)           | Lusaka (en)           |
| Zimbabwe (wd:Q954)    | Zimbabwe (en)    | Harare (wd:Q3921)           | Harare (en)           |

[Tool] Stopped generation process

[User]
Feedback (status=done):
The SPARQL query correctly retrieves all sovereign states and their capitals, excluding those capitals with an end date, and includes English labels for both countries and capitals. The results are ordered by the country label as requested. The query also avoids using 'SERVICE wikibase:label' and returns the IRIs for the items. The output matches the user's requirements.