Question: For the instrument used by the person whose Artists in Canada record number is 42907, what class of instruments is it?
Choices: celesta
guitar
harmonica
bassoon
acoustic bass guitar
mellotron
alto saxophone
bass guitar
piano
baritone saxophone
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "class of instruments" . ?e_1 <instrument> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "human" . ?e_1 <Artists_in_Canada_record_number> ?pv . ?pv <pred:value> "42907" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Artists in Canada record number
42907
function: FilterConcept
dependencies: 1
inputs: human
function: Relate
dependencies: 2
inputs: instrument
forward
function: FilterConcept
dependencies: 3
inputs: class of instruments
function: What
dependencies: 4
Answer: harmonica