Question: Dean Martin of Port Vale F.C. belonged to that club until what date?
Choices: 1973
1991-10-18
1961-01-24
2002-02-26
1948-08-14
2006-08-27
1976-01-01
2013-11-15
1653
1797-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Dean Martin" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Port Vale F.C." . ?e_2 <pred:name> "Port Vale 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: Port Vale 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: Port Vale F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
end time
Answer: 1976-01-01