Question: Was Howard Hughes born on 1920-06-12?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: no
SPARQL: ASK { ?e <pred:name> "Howard Hughes" . ?e <date_of_birth> ?pv . ?pv <pred:date> "1920-06-12"^^xsd:date .  }
Program:
function: Find
inputs: Howard Hughes
function: QueryAttr
dependencies: 0
inputs: date of birth
function: VerifyDate
dependencies: 1
inputs: 1920-06-12
=