Question: Was John Williams (the one that uses the language Latin) born after 1960?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Program:
function: Find
inputs: Latin
function: Relate
dependencies: 0
inputs: languages spoken, written or signed
backward
function: Find
inputs: John Williams
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1960
>
SPARQL: ASK { ?e <pred:name> "John Williams" . ?e <languages_spoken,_written_or_signed> ?e_1 . ?e_1 <pred:name> "Latin" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v > 1960 ) .  }
Answer: no