Question: When did  Cologne become the twinned administrative body of Liverpool (whose official website is http://www.liverpool.gov.uk/)?
Choices: 1917-10-27
395
1992-11-18
1944-11-23
1996-04-15
1952
2009-01-06
1973-01-07
2013-04-17
1949-10-20
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Cologne" . ?e_2 <pred:name> "Liverpool" . ?e_2 <official_website> ?pv . ?pv <pred:value> "http://www.liverpool.gov.uk/" . ?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: Cologne
function: Find
inputs: Liverpool
function: FilterStr
dependencies: 1
inputs: official website
http://www.liverpool.gov.uk/
function: QueryRelationQualifier
dependencies: 0
2
inputs: twinned administrative body
start time
Answer: 1952