Question: Which class of instruments includes George Duke (who is famous for jazz fusion) in famous people?
Choices: Hammond organ
smooth jazz
baritone saxophone
rock and roll
flugelhorn
sophisti-pop
double bass
musical saw
keytar
jazz fusion
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> "George Duke" . ?e_2 <famous_people> ?e_1 . ?e_2 <pred:name> "jazz fusion" .   }
Program:
function: Find
inputs: jazz fusion
function: Relate
dependencies: 0
inputs: famous people
forward
function: Find
inputs: George Duke
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: famous people
backward
function: FilterConcept
dependencies: 4
inputs: class of instruments
function: What
dependencies: 5
Answer: keytar