Question: How many popular musics origins from the United States of America and that are part of rock music?
Choices: 0
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SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "popular music" . ?e <country_of_origin> ?e_1 . ?e_1 <pred:name> "United States of America" .  ?e <part_of> ?e_2 . ?e_2 <pred:name> "rock music" .  }
Program:
function: Find
inputs: United States of America
function: Relate
dependencies: 0
inputs: country of origin
backward
function: FilterConcept
dependencies: 1
inputs: popular music
function: Find
inputs: rock music
function: Relate
dependencies: 3
inputs: part of
backward
function: FilterConcept
dependencies: 4
inputs: popular music
function: And
dependencies: 2
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function: Count
dependencies: 6
Answer: 1