Question: What is the Hornbostel-Sachs classification of the guitar whose famous people is Maurice Gibb?
Choices: 422.211.2-71
421.121.12
421.221.12
54
322
321.322-5
321.322-71
422.112-71
422.120
314.122-4
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "guitar" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Maurice Gibb" .  ?e <Hornbostel-Sachs_classification> ?pv .  }
Program:
function: Find
inputs: Maurice Gibb
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: guitar
function: QueryAttr
dependencies: 2
inputs: Hornbostel-Sachs classification
Answer: 321.322-5