Question: What is the start date that Berlin is the twinned administrative body of Moscow (that is the capital of the Russian Empire)?
Choices: 1600
1784
1991-08-28
1981-01-15
1919-12-19
1996-12-12
2002-01-10
2008-10-17
2004-01-01
1564
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Berlin" . ?e_2 <pred:name> "Moscow" . ?e_3 <capital> ?e_2 . ?e_3 <pred:name> "Russian Empire" . ?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: Berlin
function: Find
inputs: Russian Empire
function: Relate
dependencies: 1
inputs: capital
forward
function: Find
inputs: Moscow
function: And
dependencies: 2
3
function: QueryRelationQualifier
dependencies: 0
4
inputs: twinned administrative body
start time
Answer: 1991-08-28