Question: Which movie is directed by Walter Lantz?
Choices: Africa
Men in Black
Pleasantville
Nebraska
A Prairie Home Companion
Talk to Her
Velvet Goldmine
The Ladykillers
Night at the Museum
North by Northwest
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "visual artwork" . ?e <director> ?e_1 . ?e_1 <pred:name> "Walter Lantz" .   }
Program:
function: Find
inputs: Walter Lantz
function: Relate
dependencies: 0
inputs: director
backward
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: What
dependencies: 2
Answer: Africa