Question: When did Kinshasa stop using Dutch (the one whose country is Netherlands) as the official language?
Choices: 1960
1423
1697
1975-01-01
2010-10-03
1988-10-02
1969-09-10
2001-01-03
1859-01-23
1804-12-02
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Kinshasa" . ?e_2 <pred:name> "Dutch" . ?e_2 <country> ?e_3 . ?e_3 <pred:name> "Netherlands" . ?e_1 <official_language> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <official_language> ; <pred:fact_t> ?e_2 ] <end_time> ?qpv .  }
Program:
function: Find
inputs: Kinshasa
function: Find
inputs: Netherlands
function: Relate
dependencies: 1
inputs: country
backward
function: Find
inputs: Dutch
function: And
dependencies: 2
3
function: QueryRelationQualifier
dependencies: 0
4
inputs: official language
end time
Answer: 1960