Question: What class of instruments is related to the famous person named Steve Earle (whose record label is Warner Music Group) and has the Hornbostel-Sachs classification 321.321?
Choices: oboe
Bouzouki
harmonica
maraca
xylophone
baritone saxophone
Timbales
didgeridoo
tenor saxophone
conga
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "class of instruments" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Steve Earle" . ?e_1 <record_label> ?e_2 . ?e_2 <pred:name> "Warner Music Group" .  ?e <Hornbostel-Sachs_classification> ?pv . ?pv <pred:value> "321.321" .  }
Program:
function: Find
inputs: Warner Music Group
function: Relate
dependencies: 0
inputs: record label
backward
function: Find
inputs: Steve Earle
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: famous people
backward
function: FilterConcept
dependencies: 4
inputs: class of instruments
function: FindAll
function: FilterStr
dependencies: 6
inputs: Hornbostel-Sachs classification
321.321
function: FilterConcept
dependencies: 7
inputs: class of instruments
function: And
dependencies: 5
8
function: What
dependencies: 9
Answer: Bouzouki