Question: What class of instruments' famous person is Todd Rundgren and Hornbostel-Sachs classification is 531.1?
Choices:
keytar
drum machine
drum kit
theremin
Vocoder
Timbales
electronic drum
goblet drum
Omnichord
xylophone
Program:
function: Find
inputs: Todd Rundgren
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: class of instruments
function: FindAll
function: FilterStr
dependencies: 3
inputs: Hornbostel-Sachs classification
531.1
function: FilterConcept
dependencies: 4
inputs: class of instruments
function: And
dependencies: 2
5
function: What
dependencies: 6
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> "Todd Rundgren" .  ?e <Hornbostel-Sachs_classification> ?pv . ?pv <pred:value> "531.1" .  }
Answer: theremin