Question: Is Shackleton's release date earlier than 1979?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Program:
function: Find
inputs: Shackleton
function: QueryAttr
dependencies: 0
inputs: publication date
function: VerifyYear
dependencies: 1
inputs: 1979
<
SPARQL: ASK { ?e <pred:name> "Shackleton" . ?e <publication_date> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1979 ) .  }
Answer: no