Question: When did Hangzhou become the twinned administrative body of the place officially named Dresden?
Choices: 2011-04-18
1948-01-01
1992-07-23
1975-03-15
1927-04-12
1973-06-03
2011-09-27
2009-01-01
1718-07-21
2007-03-02
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Hangzhou" . ?e_2 <pred:name> "Dresden" . ?e_2 <official_name> ?pv . ?pv <pred:value> "Dresden" . ?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: Hangzhou
function: Find
inputs: Dresden
function: FilterStr
dependencies: 1
inputs: official name
Dresden
function: QueryRelationQualifier
dependencies: 0
2
inputs: twinned administrative body
start time
Answer: 2009-01-01