Question: When did  Joan Plowright become a spouse of Laurence Olivier?
Choices:
2001-01-03
1973-07-28
2004-06-04
1971-12-03
1930-03-17
1505-01-01
1974-12-08
1961-01-01
1949-05-11
2004-07-21
Answer: 1961-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Joan Plowright" . ?e_2 <pred:name> "Laurence Olivier" . ?e_1 <spouse> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <spouse> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Joan Plowright
function: Find
inputs: Laurence Olivier
function: QueryRelationQualifier
dependencies: 0
1
inputs: spouse
start time