Question: Was Ben Foster of Manchester United F.C. born in 1981 ?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Program:
function: Find
inputs: Manchester United F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Ben Foster
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1981
=
SPARQL: ASK { ?e <pred:name> "Ben Foster" . ?e <member_of_sports_team> ?e_1 . ?e_1 <pred:name> "Manchester United F.C." .  ?e <date_of_birth> ?pv . ?pv <pred:year> 1981 .  }
Answer: no