Question: Since when has Winston-Salem been the twinned administrative body of Shanghai (the one that is the twinned administrative body of Hamburg)?
Choices:
2001-03-12
2009-07-04
2009-09-10
2006-01-01
1945-04-04
2015-11-01
1995-07-01
1884-01-01
2011-12-28
1701-01-17
Answer: 2006-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Winston-Salem" . ?e_2 <pred:name> "Shanghai" . ?e_3 <twinned_administrative_body> ?e_2 . ?e_3 <pred:name> "Hamburg" . ?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: Winston-Salem
function: Find
inputs: Hamburg
function: Relate
dependencies: 1
inputs: twinned administrative body
forward
function: Find
inputs: Shanghai
function: And
dependencies: 2
3
function: QueryRelationQualifier
dependencies: 0
4
inputs: twinned administrative body
start time