Question: When did Michael Jackson (the one that is a member of Crewe Alexandra F.C.) become a member of Preston North End F.C.?
Choices: 1964-01-16
1991
2011-12-28
1997-01-01
1877-05-09
2006-07-07
1992-07-31
1947-05-03
1643-08-22
1997-01-03
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Michael Jackson" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Crewe Alexandra F.C." . ?e_2 <pred:name> "Preston North End 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: Crewe Alexandra F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Michael Jackson
function: And
dependencies: 1
2
function: Find
inputs: Preston North End F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 1997-01-01