Question: What is the Hornbostel-Sachs classification of the bowed string instrument that is used by Tony Levin?
Choices: 242
531.1
322
521
111.242.111
321.322-71
112.1
211.26
422.211.2-71
422.212-71
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "bowed string instrument" . ?e_1 <instrument> ?e . ?e_1 <pred:name> "Tony Levin" .  ?e <Hornbostel-Sachs_classification> ?pv .  }
Program:
function: Find
inputs: Tony Levin
function: Relate
dependencies: 0
inputs: instrument
forward
function: FilterConcept
dependencies: 1
inputs: bowed string instrument
function: QueryAttr
dependencies: 2
inputs: Hornbostel-Sachs classification
Answer: 321.322-71