Question: Which clarinet is the instrumentation of the musical composition whose instrumentation is glockenspiel?
Choices: trumpet
xylophone
bass clarinet
conga
goblet drum
bassoon
didgeridoo
Timbales
baritone saxophone
trombone
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "clarinet" . ?e_1 <instrumentation> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "musical composition" . ?e_1 <instrumentation> ?e_3 . ?e_3 <pred:name> "glockenspiel" .   }
Program:
function: Find
inputs: glockenspiel
function: Relate
dependencies: 0
inputs: instrumentation
backward
function: FilterConcept
dependencies: 1
inputs: musical composition
function: Relate
dependencies: 2
inputs: instrumentation
forward
function: FilterConcept
dependencies: 3
inputs: clarinet
function: What
dependencies: 4
Answer: bass clarinet