Question: Rick Wakeman is famously associated with which keyboard instrument ?
Choices: Rhodes piano
Hammond organ
electronic dance music
jazz fusion
concertina
keytar
clavinet
classical music
accordion
pop music
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "keyboard instrument" . ?e <famous_people> ?e_1 . ?e_1 <pred:name> "Rick Wakeman" .   }
Program:
function: Find
inputs: Rick Wakeman
function: Relate
dependencies: 0
inputs: famous people
backward
function: FilterConcept
dependencies: 1
inputs: keyboard instrument
function: What
dependencies: 2
Answer: Hammond organ