Question: When was born the child of Richard Harris (the actor)?
Choices: 1959-03-21
1882-01-25
1958-01-18
1937-03-30
1953-12-30
1945-07-20
1797-06-24
1981-07-15
1961-08-24
1922-03-04
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <father> ?e_1 . ?e_1 <pred:name> "Richard Harris" . ?e_1 <occupation> ?e_2 . ?e_2 <pred:name> "actor" .  ?e <date_of_birth> ?pv .  }
Program:
function: Find
inputs: actor
function: Relate
dependencies: 0
inputs: occupation
backward
function: Find
inputs: Richard Harris
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: father
backward
function: FilterConcept
dependencies: 4
inputs: human
function: QueryAttr
dependencies: 5
inputs: date of birth
Answer: 1961-08-24