Question: Since when is Colombo the twin city of Shanghai (the one whose Dewey Decimal Classification is 2--51132) ?
Choices: 1969-11-11
1993-01-21
1890-07-10
1979-11-22
1993-04-08
1789-04-21
2003-01-01
1903
1978-01-01
1956-12-18
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Colombo" . ?e_2 <pred:name> "Shanghai" . ?e_2 <Dewey_Decimal_Classification> ?pv . ?pv <pred:value> "2--51132" . ?e_1 <twinned_administrative_body> ?e_2 . [ <pred:fact_h> ?e_1 ; <pred:fact_r> <twinned_administrative_body> ; <pred:fact_t> ?e_2 ] <start_time> ?qpv .  }
Program:
function: Find
inputs: Colombo
function: Find
inputs: Shanghai
function: FilterStr
dependencies: 1
inputs: Dewey Decimal Classification
2--51132
function: QueryRelationQualifier
dependencies: 0
2
inputs: twinned administrative body
start time
Answer: 2003-01-01