Question: Is Hal Roach the producer of the film Topaz?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: no
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "visual artwork" . ?e <producer> ?e_1 . ?e_1 <pred:name> "Hal Roach" .  ?e <title> ?pv . ?pv <pred:value> "Topaz" .  }
Program:
function: Find
inputs: Hal Roach
function: Relate
dependencies: 0
inputs: producer
backward
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: QueryAttr
dependencies: 2
inputs: title
function: VerifyStr
dependencies: 3
inputs: Topaz