Question: Is Buddy Guy's date of birth before 1974?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Buddy Guy" . ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1974 ) .  }
Program:
function: Find
inputs: Buddy Guy
function: QueryAttr
dependencies: 0
inputs: date of birth
function: VerifyYear
dependencies: 1
inputs: 1974
<
Answer: yes