Question: Which feature film with Justin Long as a voice actor is shortest?
Choices: The Muppets
National Treasure: Book of Secrets
The Flintstones
The Flintstones in Viva Rock Vegas
John Carter
Enchanted
Alvin and the Chipmunks: Chipwrecked
Old Dogs
Alvin and the Chipmunks: The Squeakquel
G-Force
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "feature film" . ?e <voice_actor> ?e_1 . ?e_1 <pred:name> "Justin Long" .  ?e <duration> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Program:
function: Find
inputs: Justin Long
function: Relate
dependencies: 0
inputs: voice actor
backward
function: FilterConcept
dependencies: 1
inputs: feature film
function: SelectAmong
dependencies: 2
inputs: duration
smallest
Answer: Alvin and the Chipmunks: Chipwrecked