Question: What is the video game developer of The Lord of the Rings: The Fellowship of the Ring (released for PlayStation 2)?
Choices: Atari
Irem
Bandai Namco Entertainment
Sonic Team
PopCap Games
2K Games
Eidos Interactive
U.S. Gold
Disney Interactive Studios
Sierra Entertainment
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "video game developer" . ?e_1 <publisher> ?e . ?e_1 <pred:name> "The Lord of the Rings: The Fellowship of the Ring" . ?e_1 <platform> ?e_2 . ?e_2 <pred:name> "PlayStation 2" .   }
Program:
function: Find
inputs: PlayStation 2
function: Relate
dependencies: 0
inputs: platform
backward
function: Find
inputs: The Lord of the Rings: The Fellowship of the Ring
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: publisher
forward
function: FilterConcept
dependencies: 4
inputs: video game developer
function: What
dependencies: 5
Answer: Sierra Entertainment