Question: What is the beginning date that Potsdam is the twinned administrative body of Lucerne?
Choices: 2003-09-22
1974-12-08
2009-01-01
1991-08-24
2007-03-05
2006-02-23
1970-10-13
1791
2002
1952-08-14
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Potsdam" . ?e_2 <pred:name> "Lucerne" . ?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: Potsdam
function: Find
inputs: Lucerne
function: QueryRelationQualifier
dependencies: 0
1
inputs: twinned administrative body
start time
Answer: 2002