Question: When did the spouse of Elvis Costello married him?
Choices: 1905
1995
2002
1918
1942
1955
1937
1991
1960
1993
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <spouse> ?e . ?e_1 <pred:name> "Elvis Costello" .  ?e <work_period_(start)> ?pv .  }
Program:
function: Find
inputs: Elvis Costello
function: Relate
dependencies: 0
inputs: spouse
forward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: work period (start)
Answer: 1993