Question: What number of bowed string instruments did Yo-Yo Ma use?
Choices:
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Answer: 2
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "bowed string instrument" . ?e_1 <instrument> ?e . ?e_1 <pred:name> "Yo-Yo Ma" .   }
Program:
function: Find
inputs: Yo-Yo Ma
function: Relate
dependencies: 0
inputs: instrument
forward
function: FilterConcept
dependencies: 1
inputs: bowed string instrument
function: Count
dependencies: 2