Question: When did Andy Williams of Rotherham United F.C. first join Port Vale F.C.?
Choices: 2015-09-22
1952-01-01
1961-09-30
2009-01-01
1815
1914
1991-01-01
2008-11-29
1988
1991-09-17
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Andy Williams" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Rotherham United 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 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Rotherham United F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Andy Williams
function: And
dependencies: 1
2
function: Find
inputs: Port Vale F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 1991-01-01