Question: Which visual artwork has a script written by Warren Ellis (whose Twitter username is warrenellis)?
Choices: Runaway Jury
Iron Man 3
The Towering Inferno
My-HiME
Pleasantville
Sir
Talk to Her
A Prairie Home Companion
The Fifth Element
Rebecca
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "visual artwork" . ?e <screenwriter> ?e_1 . ?e_1 <pred:name> "Warren Ellis" . ?e_1 <Twitter_username> ?pv . ?pv <pred:value> "warrenellis" .   }
Program:
function: Find
inputs: Warren Ellis
function: FilterStr
dependencies: 0
inputs: Twitter username
warrenellis
function: Relate
dependencies: 1
inputs: screenwriter
backward
function: FilterConcept
dependencies: 2
inputs: visual artwork
function: What
dependencies: 3
Answer: Iron Man 3