Question: Who is the composer of Shanghai (the one whose producer is Walter Wanger)?
Choices: Friedrich Hollaender
Frank Skinner
Alex North
Max Fleischer
Anton Chekhov
Klaus Badelt
William Henry Harrison
Faye Dunaway
Sylvester Stallone
Henry Corden
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <composer> ?e . ?e_1 <pred:name> "Shanghai" . ?e_1 <producer> ?e_2 . ?e_2 <pred:name> "Walter Wanger" .   }
Program:
function: Find
inputs: Walter Wanger
function: Relate
dependencies: 0
inputs: producer
backward
function: Find
inputs: Shanghai
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: composer
forward
function: FilterConcept
dependencies: 4
inputs: human
function: What
dependencies: 5
Answer: Friedrich Hollaender