Question: When did Houston (the one whose Twitter username is HoustonTX) become the twinned administrative body of Taipei?
Choices: 1987-03-30
2019-07-01
1928-01-01
1931
1988-05-04
2008-09-03
2011-05-01
1980
2006-10-16
1961-01-01
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e_1 <pred:name> "Houston" . ?e_1 <Twitter_username> ?pv . ?pv <pred:value> "HoustonTX" . ?e_2 <pred:name> "Taipei" . ?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: Houston
function: FilterStr
dependencies: 0
inputs: Twitter username
HoustonTX
function: Find
inputs: Taipei
function: QueryRelationQualifier
dependencies: 1
2
inputs: twinned administrative body
start time
Answer: 1961-01-01