Question: What is the beginning date that Luxembourg (that has military conflicts with Canada) is a member of NATO?
Choices: 2012-03-24
2015-01-21
1526
1946-06-02
1949-04-04
1949-10-07
1956-10-07
1986-06-09
1934-08-02
1887
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Luxembourg" . ?e_1 <military_conflicts> ?e_3 . ?e_3 <pred:name> "Canada" . ?e_2 <pred:name> "NATO" . ?e_1 <member_of> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <member_of> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Canada
function: Relate
dependencies: 0
inputs: military conflicts
backward
function: Find
inputs: Luxembourg
function: And
dependencies: 1
2
function: Find
inputs: NATO
function: QueryRelationQualifier
dependencies: 3
4
inputs: member of
start time
Answer: 1949-04-04