Question: Who is an executive producer of the film titled as 2012?
Choices: Charlie Kaufman
Michael De Luca
Robert Zemeckis
Roland Emmerich
Jonah Hill
Jamey Sheridan
Danny Glover
Sergei Prokofiev
Andrew G. Vajna
Jesse Louis Lasky
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e_1 <executive_producer> ?e . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "film" . ?e_1 <title> ?pv . ?pv <pred:value> "2012" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: title
2012
function: FilterConcept
dependencies: 1
inputs: film
function: Relate
dependencies: 2
inputs: executive producer
forward
function: FilterConcept
dependencies: 3
inputs: human
function: What
dependencies: 4
Answer: Roland Emmerich