Question: Who was the composer for a movie produced by Robert Duvall ?
Choices: Paul McCartney
Klaus Badelt
T-Bone Burnett
Johnny Green
Scott McNeil
Megumi Hayashibara
Himesh Reshammiya
Silvio Horta
Brian Eno
Malcolm Arnold
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <composer> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "film" . ?e_1 <producer> ?e_2 . ?e_2 <pred:name> "Robert Duvall" .   }
Program:
function: Find
inputs: Robert Duvall
function: Relate
dependencies: 0
inputs: producer
backward
function: FilterConcept
dependencies: 1
inputs: film
function: Relate
dependencies: 2
inputs: composer
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: T-Bone Burnett