Question: Is the date of birth of Thomas Lennon whose occupation is film director before the year 1973?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Thomas Lennon" . ?e <occupation> ?e_1 . ?e_1 <pred:name> "film director" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1973 ) .  }
Program:
function: Find
inputs: film director
function: Relate
dependencies: 0
inputs: occupation
backward
function: Find
inputs: Thomas Lennon
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1973
<
Answer: yes