Question: When did Chris Martin (the one that is a member of Derby County F.C.) become a member of Crystal Palace F.C.?
Choices: 1992-09-11
1921-01-01
1899
1848-01-01
2007-10-03
1832-08-13
1929-06-03
1945-06-29
1917-10-25
2011-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Chris Martin" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Derby County F.C." . ?e_2 <pred:name> "Crystal Palace 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: Derby County F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Chris Martin
function: And
dependencies: 1
2
function: Find
inputs: Crystal Palace F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 2011-01-01