Question: When did Palo Alto (the one whose inception time is 1894-01-01) become the twinned administrative body of Heidelberg?
Choices: 1945-12-10
2003-09-22
2009-09-22
1975-11-12
1791-12-29
1935-01-01
1821-08-10
2017
1999-10-05
1992-07-31
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Palo Alto" . ?e_1 <inception> ?pv . ?pv <pred:date> "1894-01-01"^^xsd:date . ?e_2 <pred:name> "Heidelberg" . ?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: Palo Alto
function: FilterDate
dependencies: 0
inputs: inception
1894-01-01
=
function: Find
inputs: Heidelberg
function: QueryRelationQualifier
dependencies: 1
2
inputs: twinned administrative body
start time
Answer: 2017