Question: When did  Igor Stravinsky start being a US citizen?
Choices:
2002-02-13
1945
1820-03-15
1773-01-01
1969-11-11
1945-04-12
1988-09-18
1848-01-01
1945-06-16
1996-01-21
Program:
function: Find
inputs: Igor Stravinsky
function: Find
inputs: United States of America
function: QueryRelationQualifier
dependencies: 0
1
inputs: country of citizenship
start time
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Igor Stravinsky" . ?e_2 <pred:name> "United States of America" . ?e_1 <country_of_citizenship> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <country_of_citizenship> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Answer: 1945