Question: What's the number of instrument classes based on the electronic musical instrument that's based on a drum kit?
Choices:
0
1
2
3
4
5
6
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9
Answer: 1
SPARQL: SELECT (COUNT(DISTINCT ?e) AS ?count) WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "class of instruments" . ?e <derivative_work> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "electronic musical instrument" . ?e_2 <derivative_work> ?e_1 . ?e_2 <pred:name> "drum kit" .   }
Program:
function: Find
inputs: drum kit
function: Relate
dependencies: 0
inputs: derivative work
forward
function: FilterConcept
dependencies: 1
inputs: electronic musical instrument
function: Relate
dependencies: 2
inputs: derivative work
backward
function: FilterConcept
dependencies: 3
inputs: class of instruments
function: Count
dependencies: 4