Question: How many musical instruments are used by someone who plays twelve-string guitar instrument ?
Choices: 0
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SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "musical instrument" . ?e_1 <instrument> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "human" . ?e_1 <instrument> ?e_2 . ?e_2 <pred:name> "twelve-string guitar" .   }
Program:
function: Find
inputs: twelve-string guitar
function: Relate
dependencies: 0
inputs: instrument
backward
function: FilterConcept
dependencies: 1
inputs: human
function: Relate
dependencies: 2
inputs: instrument
forward
function: FilterConcept
dependencies: 3
inputs: musical instrument
function: Count
dependencies: 4
Answer: 2