Question: What is the work period start for the spouse of Sam Simon?
Choices: 1981
1925
1965
1939
1844
1975
1983
1953
1880
1957
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <spouse> ?e_1 . ?e_1 <pred:name> "Sam Simon" .  ?e <work_period_(start)> ?pv .  }
Program:
function: Find
inputs: Sam Simon
function: Relate
dependencies: 0
inputs: spouse
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: work period (start)
Answer: 1983