Question: How many islands are in the continent of North America?
Choices:
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Answer: 5
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "island" . ?e <continent> ?e_1 . ?e_1 <pred:name> "North America" .   }
Program:
function: Find
inputs: North America
function: Relate
dependencies: 0
inputs: continent
backward
function: FilterConcept
dependencies: 1
inputs: island
function: Count
dependencies: 2