Question: When did Rosario become the twinned administrative body of Shanghai (the one whose local dialing code is 21)?
Choices: 1983-09-13
1933-03-04
2006-11-16
1992-04-13
1998-08-27
1968-02-06
1917-07-31
1997
2017-11-10
1997-06-20
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Rosario" . ?e_2 <pred:name> "Shanghai" . ?e_2 <local_dialing_code> ?pv . ?pv <pred:value> "21" . ?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: Rosario
function: Find
inputs: Shanghai
function: FilterStr
dependencies: 1
inputs: local dialing code
21
function: QueryRelationQualifier
dependencies: 0
2
inputs: twinned administrative body
start time
Answer: 1997