Question: When did the European Union start using Portuguese as the official language?
Choices:
2002-10-30
1801-01-01
1995-02-19
1994-09-16
1986-01-01
1870-01-18
1990-08-14
2004-07-16
1989-10-23
2003-09-21
Answer: 1986-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "European Union" . ?e_2 <pred:name> "Portuguese" . ?e_1 <official_language> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <official_language> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: European Union
function: Find
inputs: Portuguese
function: QueryRelationQualifier
dependencies: 0
1
inputs: official language
start time