Question: What is the date of birth of Ron Carter (who is famous for using the cello)?
Choices:
1941-12-09
1936-05-09
1906-12-24
1986-11-05
1989-07-10
1971-10-05
1937-05-04
1977-02-10
1949-03-14
1960-11-18
Program:
function: Find
inputs: cello
function: Relate
dependencies: 0
inputs: famous people
forward
function: Find
inputs: Ron Carter
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Ron Carter" . ?e_1 <famous_people> ?e . ?e_1 <pred:name> "cello" .  ?e <date_of_birth> ?pv .  }
Answer: 1937-05-04