Question: Is 314.122-4 the Hornbostel-Sachs classification for the guitar used by John Williams (whose Libris-URI is b8nrv79v00ndvzn)?
Choices: yes
no
unknown
unknown
unknown
unknown
unknown
unknown
unknown
unknown
SPARQL: ASK { ?e <pred:instance_of> ?c . ?c <pred:name> "guitar" . ?e_1 <instrument> ?e . ?e_1 <pred:name> "John Williams" . ?e_1 <Libris-URI> ?pv_1 . ?pv_1 <pred:value> "b8nrv79v00ndvzn" . ?e <Hornbostel-Sachs_classification> ?pv . ?pv <pred:value> "314.122-4" .  }
Program:
function: Find
inputs: John Williams
function: FilterStr
dependencies: 0
inputs: Libris-URI
b8nrv79v00ndvzn
function: Relate
dependencies: 1
inputs: instrument
forward
function: FilterConcept
dependencies: 2
inputs: guitar
function: QueryAttr
dependencies: 3
inputs: Hornbostel-Sachs classification
function: VerifyStr
dependencies: 4
inputs: 314.122-4
Answer: no