Question: How many electronic musical instruments are a derivative work of gong?
Choices:
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Answer: 0
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "electronic musical instrument" . ?e_1 <derivative_work> ?e . ?e_1 <pred:name> "gong" .   }
Program:
function: Find
inputs: gong
function: Relate
dependencies: 0
inputs: derivative work
forward
function: FilterConcept
dependencies: 1
inputs: electronic musical instrument
function: Count
dependencies: 2