Question: Ken Burns is in the cast of which movie?
Choices: Gettysburg
A Prairie Home Companion
Pleasantville
Talk to Her
Ghost Rider: Spirit of Vengeance
True Grit
Black Sabbath
Anonymous
Rebecca
Milan
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "visual artwork" . ?e <cast_member> ?e_1 . ?e_1 <pred:name> "Ken Burns" .   }
Program:
function: Find
inputs: Ken Burns
function: Relate
dependencies: 0
inputs: cast member
backward
function: FilterConcept
dependencies: 1
inputs: visual artwork
function: What
dependencies: 2
Answer: Gettysburg