Question: Was John Ford (the one that is educated at University of Memphis) born before 1964?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Program:
function: Find
inputs: University of Memphis
function: Relate
dependencies: 0
inputs: educated at
backward
function: Find
inputs: John Ford
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1964
<
SPARQL: ASK { ?e <pred:name> "John Ford" . ?e <educated_at> ?e_1 . ?e_1 <pred:name> "University of Memphis" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1964 ) .  }
Answer: yes