Question: Is the official name of a big city, that serves as the twin-town of Reims since 28th Jan 1967, equal to European Union ?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "big city" . ?e <twinned_administrative_body> ?e_1 . ?e_1 <pred:name> "Reims" .  [ <pred:fact_h> ?e ; <pred:fact_r> <twinned_administrative_body> ; <pred:fact_t> ?e_1 ] <start_time> ?qpv . ?qpv <pred:date> "1967-01-28"^^xsd:date . ?e <official_name> ?pv . ?pv <pred:value> "European Union" .  }
Program:
function: Find
inputs: Reims
function: Relate
dependencies: 0
inputs: twinned administrative body
backward
function: QFilterDate
dependencies: 1
inputs: start time
1967-01-28
=
function: FilterConcept
dependencies: 2
inputs: big city
function: QueryAttr
dependencies: 3
inputs: official name
function: VerifyStr
dependencies: 4
inputs: European Union
Answer: no