Question: When did  Claudette Colbert become Norman Foster's (the one that has the occupation of screenwriter) spouse?
Choices:
1964
1952-01-01
1918-03-02
1990-10-01
1815-08-07
2010-05-11
1935-01-01
1997
1941-04-18
1453-05-28
Answer: 1935-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Claudette Colbert" . ?e_2 <pred:name> "Norman Foster" . ?e_2 <occupation> ?e_3 . ?e_3 <pred:name> "screenwriter" . ?e_1 <spouse> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <spouse> ; <pred:fact_t> ?e_2 ] <end_time> ?qpv .  }
Program:
function: Find
inputs: Claudette Colbert
function: Find
inputs: screenwriter
function: Relate
dependencies: 1
inputs: occupation
backward
function: Find
inputs: Norman Foster
function: And
dependencies: 2
3
function: QueryRelationQualifier
dependencies: 0
4
inputs: spouse
end time