Question: What is the Hornbostel-Sachs classification for the guitar that is the instrument used by Brian Jones who has the record label Decca?
Choices: 521
421.121.12
211.11
54
211.221.1
111.222
321.322-5
513
121.2
423.121.11
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "guitar" . ?e_1 <instrument> ?e . ?e_1 <pred:name> "Brian Jones" . ?e_1 <record_label> ?e_2 . ?e_2 <pred:name> "Decca" .  ?e <Hornbostel-Sachs_classification> ?pv .  }
Program:
function: Find
inputs: Decca
function: Relate
dependencies: 0
inputs: record label
backward
function: Find
inputs: Brian Jones
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: instrument
forward
function: FilterConcept
dependencies: 4
inputs: guitar
function: QueryAttr
dependencies: 5
inputs: Hornbostel-Sachs classification
Answer: 321.322-5