Question: When did Alan Bennett ( the member of Port Vale F. C.) become a member of Crewe Alexandra F.C.?
Choices: 1650-06-25
2002-10-29
1998-05-01
1933-01-30
1975
1898-12-10
1970-10-13
1957-01-01
1972-01-01
1952
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Alan Bennett" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Port Vale F.C." . ?e_2 <pred:name> "Crewe Alexandra 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: Port Vale F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Alan Bennett
function: And
dependencies: 1
2
function: Find
inputs: Crewe Alexandra F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 1957-01-01