Question: What number of singles are composed by Pharrell Williams?
Choices: 0
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SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "single" . ?e <composer> ?e_1 . ?e_1 <pred:name> "Pharrell Williams" .   }
Program:
function: Find
inputs: Pharrell Williams
function: Relate
dependencies: 0
inputs: composer
backward
function: FilterConcept
dependencies: 1
inputs: single
function: Count
dependencies: 2
Answer: 2