Question: What is the avant-garde metal of the electronic musical instrument used by the human?
Choices: didgeridoo
xylophone
sampler
Timbales
Vocoder
electronic drum
Omnichord
theremin
keytar
drum machine
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "electronic musical instrument" . ?e_1 <instrument> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "human" . ?e_1 <genre> ?e_2 . ?e_2 <pred:name> "avant-garde metal" .   }
Program:
function: Find
inputs: avant-garde metal
function: Relate
dependencies: 0
inputs: genre
backward
function: FilterConcept
dependencies: 1
inputs: human
function: Relate
dependencies: 2
inputs: instrument
forward
function: FilterConcept
dependencies: 3
inputs: electronic musical instrument
function: What
dependencies: 4
Answer: sampler