Question: Since when is Poland the member of NATO ?
Choices: 1896-06-24
2012-01-08
2002-04-17
1945-10-25
1979-10-26
1993-04-28
1861-04-22
1997-06-06
1999-03-12
1972-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Poland" . ?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: Poland
function: Find
inputs: NATO
function: QueryRelationQualifier
dependencies: 0
1
inputs: member of
start time
Answer: 1999-03-12