Question: When did Oscar (the one that is a member of Chelsea F.C.) become a member of Chelsea F.C.?
Choices: 1708-07-05
1814-05-30
1997-12-14
2007-07-03
1961-01-01
1993-09-21
1970-10-28
1901-03-01
2012
1825
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Oscar" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Chelsea F.C." . ?e_2 <pred:name> "Chelsea 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: Chelsea F.C.
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: Oscar
function: And
dependencies: 1
2
function: Find
inputs: Chelsea F.C.
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 2012