Question: Is http://www.lboro.ac.uk the official website of Elvis Costello's spouse?
Choices:
yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
Answer: no
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <spouse> ?e_1 . ?e_1 <pred:name> "Elvis Costello" .  ?e <official_website> ?pv . ?pv <pred:value> "http://www.lboro.ac.uk" .  }
Program:
function: Find
inputs: Elvis Costello
function: Relate
dependencies: 0
inputs: spouse
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: official website
function: VerifyStr
dependencies: 3
inputs: http://www.lboro.ac.uk