Question: What is the starting date that John Powell (who is a member of Boston United F.C.) becomes a member of York City F.C.?
Choices: 1974-01-15
2012-01-16
2006-03-12
2007-03-05
2003-08-29
2011-12-09
1918-04-01
1945-11-09
1955-01-01
2011-09-13
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "John Powell" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Boston United F.C." . ?e_2 <pred:name> "York City 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: Boston United F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: John Powell
function: And
dependencies: 1
2
function: Find
inputs: York City F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 1955-01-01