Question: At what frequency does the voltage of 400 volt used in an administrative territory, located in Greenwich Mean Time time zone, work ?
Choices: 55 hertz
50
Islamic state
C0034065
Tarzan
VHS
50 hertz
117233744
60 hertz
Grade I listed building
SPARQL: SELECT DISTINCT ?qpv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "administrative territorial entity" . ?e <located_in_time_zone> ?e_1 . ?e_1 <pred:name> "Greenwich Mean Time" .  ?e <voltage> ?pv . ?pv <pred:unit> "volt" . ?pv <pred:value> "400"^^xsd:double . [ <pred:fact_h> ?e ; <pred:fact_r> <voltage> ; <pred:fact_t> ?pv ] <frequency> ?qpv .  }
Program:
function: Find
inputs: Greenwich Mean Time
function: Relate
dependencies: 0
inputs: located in time zone
backward
function: FilterConcept
dependencies: 1
inputs: administrative territorial entity
function: QueryAttrQualifier
dependencies: 2
inputs: voltage
400 volt
frequency
Answer: 50 hertz