Question: What are the number of metropolitan areas with area equal to 50 square versta ?
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Answer: 0
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "metropolitan area" . ?e <area> ?pv . ?pv <pred:unit> "square versta" . ?pv <pred:value> "50"^^xsd:double .  }
Program:
function: FindAll
function: FilterNum
dependencies: 0
inputs: area
50 square versta
=
function: FilterConcept
dependencies: 1
inputs: metropolitan area
function: Count
dependencies: 2