Question: What is the official website of the business that produceds Cobra (the one that mainly depicts serial killer)?
Choices:
http://www.christopher-young.com
http://www.endemol.com/
https://www.jfkairport.com
http://cannonfilms.com/
http://www.farnboroughfc.co.uk/
https://www.canaries.co.uk/
http://bhhs.bhusd.org/
https://www.livornocalcio.it/
http://al-jourgensen.squarespace.com/
http://www.sonypictures.com/movies/stepbrothers
Answer: http://cannonfilms.com/
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "business" . ?e_1 <production_company> ?e . ?e_1 <pred:name> "Cobra" . ?e_1 <main_subject> ?e_2 . ?e_2 <pred:name> "serial killer" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: serial killer
function: Relate
dependencies: 0
inputs: main subject
backward
function: Find
inputs: Cobra
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: production company
forward
function: FilterConcept
dependencies: 4
inputs: business
function: QueryAttr
dependencies: 5
inputs: official website