PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
SELECT ?spouse ?spouseLabel WHERE {
  wd:Q34969 wdt:P26 ?spouse .
  OPTIONAL {
    ?spouse rdfs:label ?spouseLabel FILTER ( lang( ?spouseLabel ) = "en" )
  }
}

Benjamin Franklin's wife was Deborah Read Franklin (wd:Q3020859), as shown by the query which also includes her English label for clarity.

[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 http://amur:7001

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 was the name of benjamin franklin wife?

[Assistant]
Let's break down the question:

1. The user is asking for the name of Benjamin Franklin's wife.
2. First, I need to identify the Wikidata entity for Benjamin Franklin.
3. Then, I need to find the property that links a person to their spouse.
4. Finally, I will write a SPARQL query to retrieve the spouse's identifier and name.

First, I will search for the entity "Benjamin Franklin" in Wikidata.

[Tool]
Top 10 entity alternatives:
1. Benjamin Franklin, also known as The First American, Silence Dogood, Poor Richard, Ben Franklin, Franklin (wd:Q34969): American polymath and statesman (1706–1790), politician, polymath, diplomat, writer
2. Benjamin Franklin, also known as The First American, Silence Dogood, Poor Richard, Franklin, Ben Franklin (wd:Q34969): American polymath and statesman (1706–1790), politician, polymath, diplomat, writer
3. Statue of Benjamin Franklin, also known as Benjamin Franklin, Benjamin Franklin Statue (wd:Q4888607): statue in Washington, D.C.
4. Statue of Benjamin Franklin, also known as statue of Benjamin Franklin (Boston), Benjamin Franklin (wd:Q49474378): statue in Boston, Massachusetts
5. Benjamin Franklin (wd:Q23016654): sculpture in San Francisco
6. Benjamin Franklin, also known as Sir Benjamin Franklin (wd:Q4888611): military physician, British surgeon, surgeon
7. Benjamin Franklin (wd:Q4888609): 1974 miniseries
8. Benjamin Franklin (wd:Q4888604): 2002 television series
9. Statue of Benjamin Franklin, also known as Benjamin Franklin (wd:Q4888606): statue outside College Hall, University of Pennsylvania, Philadelphia
10. Statue of Benjamin Franklin, also known as Benjamin Franklin (wd:Q22021867): statue in Portland, Oregon

[Assistant]
The correct entity for Benjamin Franklin, the American polymath and statesman, is wd:Q34969.

Next, I need to find the property that links a person to their spouse. I will search for properties related to "spouse" in Wikidata.

[Tool]
Top 10 property alternatives:
1. spouse, also known as married partner, married to, marry, partner, spouses (wd:P26 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): the subject has the object as their spouse (husband, wife, partn...etc.). Use "unmarried partner" (P451) for non-married companions, significant person, relative
2. relative, also known as relatives, grandparent, relation, non-binary parent, niece (wd:P1038 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): family member (qualify with "kinship to subject", P1039; for direct family member please use specific property), significant person
3. unmarried partner, also known as romantic partner, partner of, partners, posslq, relationship (wd:P451 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): someone with whom the person is in a relationship without being married. Use "spouse" (P26) for married couples, significant person
4. married name, also known as full name (married) (wd:P2562 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): name or surname adopted by a person upon marriage, name
5. place of marriage, also known as marriage location, wedding location, wed at, married in, married at (wd:P2842 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): location where the marriage was celebrated. Use as qualifier for property "spouse" (P26), significant place
6. birth name, also known as née, name at birth, name before marriage, ne, né (wd:P1477 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): full name of a person at birth, if different from their current, generally used name, name
7. connects with, also known as contacts, couples with, intersects at grade, links to, mates with (wd:P2789 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): item with which the item is physically connected, physically interacts with
8. companion of, also known as has astronomical companion, has companion, companion, astronomic companion of, astronomic companion (wd:P399 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): two or more astronomic bodies of the same type relating to each other
9. end time, also known as ends, stop time, endtime, fall date, ineffective (wd:P582 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): moment when an entity ceases to exist and a statement stops being entirely valid or no longer be true, point in time
10. relation (wd:P2309 as wdtn/pr/prv/psn/pqn/prn/p/ps/psv/wdt/pq/pqv): qualifier to define a property constraint in combination with P2...h the property "relative" is "type of kinship" (P1039), not this

[Assistant]
The property for "spouse" is wd:P26.

Now, I will construct a SPARQL query to find the spouse(s) of Benjamin Franklin (wd:Q34969), returning the spouse's identifier and their label (name).

[Tool]
Got 1 row and 2 columns:
| spouse                              | spouseLabel                |
| ----------------------------------- | -------------------------- |
| Deborah Read Franklin (wd:Q3020859) | Deborah Read Franklin (en) |

[Tool] Stopped generation process

[User]
Feedback (status=refine):
The SPARQL query correctly retrieves the spouse of Benjamin Franklin by returning the IRI of the spouse. However, the query does not include the label of the spouse, which would be helpful for human readability and verification. To improve the output, add an OPTIONAL clause to retrieve the rdfs:label of the spouse. This will make the result more informative and user-friendly, especially if the answer is to be presented to a user.

[Assistant]
Thank you for your feedback. You are correct—the query can be improved by including an OPTIONAL clause to retrieve the rdfs:label of the spouse for better readability.

Here is the refined SPARQL query that returns both the spouse's IRI and their English label:

```sparql
SELECT ?spouse ?spouseLabel WHERE {
  wd:Q34969 wdt:P26 ?spouse .
  OPTIONAL { ?spouse rdfs:label ?spouseLabel FILTER (lang(?spouseLabel) = "en") }
}
```

This query will provide both the identifier and the human-readable name of Benjamin Franklin's wife.

[Tool] Stopped generation process

[User]
Feedback (status=done):
The SPARQL query correctly retrieves the spouse of Benjamin Franklin using the appropriate property (wdt:P26) and includes an optional clause to fetch the English label. The answer provided matches the query result and is accurate. All requirements are met and the output is correct and complete.