Question: When did John Williams (the one that is a member of Darlington F.C.) become a member of Cardiff City F.C.?
Choices: 1806-07-11
2018-02-15
1987
1973-09-01
1999-01-01
1915-06-12
1803-01-01
1992-01-01
1891-06-01
2009-12-04
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "John Williams" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Darlington F.C." . ?e_2 <pred:name> "Cardiff City F.C." . ?e_1 <member_of_sports_team> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <member_of_sports_team> ; <pred:fact_t> ?e_2 ] <end_time> ?qpv .  }
Program:
function: Find
inputs: Darlington F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: John Williams
function: And
dependencies: 1
2
function: Find
inputs: Cardiff City F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
end time
Answer: 1999-01-01