Question: When did Keith Allen of Stockport County F.C. become a member of Portsmouth F.C.?
Choices: 1905-03-17
1861-02-08
1976-09-22
2002-02-25
1712
1962-01-01
1944-01-01
1856-07-10
2005-02-21
1996-07-29
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Keith Allen" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Stockport County F.C." . ?e_2 <pred:name> "Portsmouth 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: Stockport County F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Keith Allen
function: And
dependencies: 1
2
function: Find
inputs: Portsmouth F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 1962-01-01