Question: Was The Believer (the one that origins from Canada) published before 1954?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: no
SPARQL: ASK { ?e <pred:name> "The Believer" . ?e <country_of_origin> ?e_1 . ?e_1 <pred:name> "Canada" .  ?e <publication_date> ?pv . ?pv <pred:year> ?v . FILTER ( ?v < 1954 ) .  }
Program:
function: Find
inputs: Canada
function: Relate
dependencies: 0
inputs: country of origin
backward
function: Find
inputs: The Believer
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: publication date
function: VerifyYear
dependencies: 4
inputs: 1954
<