Question: What is the official website of Doc Watson who is famous for guitar?
Choices: http://www.amctv.com/shows/mad-men
http://www.vfb.de/
http://www.cr-bourgogne.fr/
http://www.philramone.com
http://www.hfpa.org/missmr-golden-globe/
http://www.docsguitar.com/
http://www.aamirkhan.com
http://www.monte-carlo.mc
http://www.gobroomecounty.com
http://www.clevelandbrowns.com
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Doc Watson" . ?e_1 <famous_people> ?e . ?e_1 <pred:name> "guitar" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: guitar
function: Relate
dependencies: 0
inputs: famous people
forward
function: Find
inputs: Doc Watson
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: official website
Answer: http://www.docsguitar.com/