Question: Was Ben Johnson (the one that is related to sport association football) not born in 1732?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Program:
function: Find
inputs: association football
function: Relate
dependencies: 0
inputs: sport
backward
function: Find
inputs: Ben Johnson
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1732
!=
SPARQL: ASK { ?e <pred:name> "Ben Johnson" . ?e <sport> ?e_1 . ?e_1 <pred:name> "association football" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1732 ) .  }
Answer: yes