Question: When did John Hughes (the member of Edmonton Oilers) become a  member of New York Rangers?
Choices: 1962-09-18
1838
2013-01-26
2001-10-02
1945-12-27
1876
1833-11-30
1980
1945-06-16
1989-09-02
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "John Hughes" . ?e_1 <member_of_sports_team> ?e_3 . ?e_3 <pred:name> "Edmonton Oilers" . ?e_2 <pred:name> "New York Rangers" . ?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: Edmonton Oilers
function: Relate
dependencies: 0
inputs: member of sports team
backward
function: Find
inputs: John Hughes
function: And
dependencies: 1
2
function: Find
inputs: New York Rangers
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of sports team
start time
Answer: 1980