Question: When did Dean Martin (the one that is a member of West Ham United F.C.) become a member of West Ham United F.C.?
Choices: 1947-05-03
1990-08-02
2013-05-13
1833-11-30
1851
1991-01-01
2017-02-28
1997-01-30
2013-09-23
1933-03-24
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Dean Martin" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "West Ham United F.C." . ?e_2 <pred:name> "West Ham United 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 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: West Ham United F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Dean Martin
function: And
dependencies: 1
2
function: Find
inputs: West Ham United F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 1991-01-01