Question: When was the conclusion of the career of Yoko Ono's husband?
Choices: 1980
2003-03-30
2017
1976
1992
1972
1827
2011
1991
1971
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <spouse> ?e . ?e_1 <pred:name> "Yoko Ono" .  ?e <work_period_(end)> ?pv .  }
Program:
function: Find
inputs: Yoko Ono
function: Relate
dependencies: 0
inputs: spouse
forward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: work period (end)
Answer: 1980