Question: Is the guitarist Peter Buck's date of birth not in 1962?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:name> "Peter Buck" . ?e <instrument> ?e_1 . ?e_1 <pred:name> "guitar" .  ?e <date_of_birth> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1962 ) .  }
Program:
function: Find
inputs: guitar
function: Relate
dependencies: 0
inputs: instrument
backward
function: Find
inputs: Peter Buck
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: date of birth
function: VerifyYear
dependencies: 4
inputs: 1962
!=