Question: Stoke-on-Trent, England is the twin city of Erlangen, Germany.  When did this occur?
Choices:
1804-04-01
1989-01-01
1986-01-01
2017-11-23
2008-11-29
1919-08-08
1994-01-17
1800-09-22
2002-11-21
1992-07-25
Answer: 1989-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Stoke-on-Trent" . ?e_2 <pred:name> "Erlangen" . ?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: Stoke-on-Trent
function: Find
inputs: Erlangen
function: QueryRelationQualifier
dependencies: 0
1
inputs: twinned administrative body
start time