Question: Is the work period (start) of the human that is a performer of Thor (which has John Rhys-Davies as a performer) not in 1983?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: yes
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <performer> ?e . ?e_1 <pred:name> "Thor" . ?e_1 <performer> ?e_2 . ?e_2 <pred:name> "John Rhys-Davies" .  ?e <work_period_(start)> ?pv . ?pv <pred:year> ?v . FILTER ( ?v != 1983 ) .  }
Program:
function: Find
inputs: John Rhys-Davies
function: Relate
dependencies: 0
inputs: performer
backward
function: Find
inputs: Thor
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: performer
forward
function: FilterConcept
dependencies: 4
inputs: human
function: QueryAttr
dependencies: 5
inputs: work period (start)
function: VerifyYear
dependencies: 6
inputs: 1983
!=