Question: Is sometime prior to 1957 the birth date of the person who earns a living by creating sculptures?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <field_of_work> ?e_1 . ?e_1 <pred:name> "art of sculpture" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1957 ) .  }
Program:
function: Find
inputs: art of sculpture
function: Relate
dependencies: 0
inputs: field of work
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: date of birth
function: VerifyYear
dependencies: 3
inputs: 1957
<
Answer: yes