Question: When did Halifax (whose Statistics Canada Geographic code is 1209034) become the twinned administrative body of Aachen (whose population is 23413)?
Choices: 1969-03-20
1950-01-01
2007-04-20
1999-01-01
1979-01-01
1996-07-17
1960
2007-01-29
1992-08-01
2006-10-16
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Halifax" . ?e_1 <Statistics_Canada_Geographic_code> ?pv . ?pv <pred:value> "1209034" . ?e_2 <pred:name> "Aachen" . ?e_2 <population> ?pv_1 . ?pv_1 <pred:unit> "1" . ?pv_1 <pred:value> "23413"^^xsd:double . ?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: Halifax
function: FilterStr
dependencies: 0
inputs: Statistics Canada Geographic code
1209034
function: Find
inputs: Aachen
function: FilterNum
dependencies: 2
inputs: population
23413
=
function: QueryRelationQualifier
dependencies: 1
3
inputs: twinned administrative body
start time
Answer: 1979-01-01