Question: What is the start date that David Cross (who is a member of Rochdale A.F.C.) becomes a member of West Ham United F.C.?
Choices:
1982-04-20
2009-08-07
1912-01-06
1995
2017-09-05
1940-08-06
2018-04-13
1879-03-14
1977-01-01
2007-10-25
Answer: 1977-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "David Cross" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Rochdale A.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: Rochdale A.F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: David Cross
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