Question: How many classes of instruments whose famous people is Adrian Belew and that derives Vocoder?
Choices: 0
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SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "class of instruments" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Adrian Belew" .  ?e <derivative_work> ?e_2 . ?e_2 <pred:name> "Vocoder" .  }
Program:
function: Find
inputs: Adrian Belew
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: class of instruments
function: Find
inputs: Vocoder
function: Relate
dependencies: 3
inputs: derivative work
backward
function: FilterConcept
dependencies: 4
inputs: class of instruments
function: And
dependencies: 2
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function: Count
dependencies: 6
Answer: 0