Question: Was Jonathan Walters born before 1986?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:name> "Jonathan Walters" . ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1986 ) .  }
Program:
function: Find
inputs: Jonathan Walters
function: QueryAttr
dependencies: 0
inputs: date of birth
function: VerifyYear
dependencies: 1
inputs: 1986
<
Answer: yes