Question: Which feature film where Robert Zemeckis wrote the script was least expensive?
Choices: The Muppets
Back to the Future
G-Force
Alvin and the Chipmunks: Chipwrecked
Old Dogs
Holes
The Flintstones
John Carter
The Flintstones in Viva Rock Vegas
Back to the Future Part II
SPARQL: SELECT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "feature film" . ?e <screenwriter> ?e_1 . ?e_1 <pred:name> "Robert Zemeckis" .  ?e <cost> ?pv . ?pv <pred:value> ?v .  } ORDER BY ?v LIMIT 1
Program:
function: Find
inputs: Robert Zemeckis
function: Relate
dependencies: 0
inputs: screenwriter
backward
function: FilterConcept
dependencies: 1
inputs: feature film
function: SelectAmong
dependencies: 2
inputs: cost
smallest
Answer: Back to the Future