Question: Did John Grisham author a written work with the title The Grifters?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: no
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "written work" . ?e <author> ?e_1 . ?e_1 <pred:name> "John Grisham" .  ?e <title> ?pv . ?pv <pred:value> "The Grifters" .  }
Program:
function: Find
inputs: John Grisham
function: Relate
dependencies: 0
inputs: author
backward
function: FilterConcept
dependencies: 1
inputs: written work
function: QueryAttr
dependencies: 2
inputs: title
function: VerifyStr
dependencies: 3
inputs: The Grifters