Question: What is the official website of Rock of Ages (the one that is released for Microsoft Windows)?
Choices: https://www.southendunited.co.uk/
http://www.acadiau.ca
http://www.sonypictures.com/movies/seraphimfalls/
http://www.atlus.com/rockofages/
http://fussball.sv-wacker.de/
http://www.ksc.de
http://www.paramountvantage.com/
http://whc.unesco.org/
https://www.apple.com/it
http://www.pythonline.com/
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Rock of Ages" . ?e <platform> ?e_1 . ?e_1 <pred:name> "Microsoft Windows" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Microsoft Windows
function: Relate
dependencies: 0
inputs: platform
backward
function: Find
inputs: Rock of Ages
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: official website
Answer: http://www.atlus.com/rockofages/