Question: Which website represents the band with country musician Ray Charles as a member?
Choices: http://www.angers-sco.fr/
http://www.gary.in.us/
http://www.ankara.bel.tr/
http://www.rochester.edu
http://www.pattyloveless.com
http://www.plainfield.com/
http://www.usaforafrica.org/
http://www.colum.edu
http://www.minneapolismn.gov/
http://www.sexandthecitymovie.com
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "band" . ?e <has_part> ?e_1 . ?e_1 <pred:name> "Ray Charles" . ?e_1 <genre> ?e_2 . ?e_2 <pred:name> "country music" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: country music
function: Relate
dependencies: 0
inputs: genre
backward
function: Find
inputs: Ray Charles
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: has part
backward
function: FilterConcept
dependencies: 4
inputs: band
function: QueryAttr
dependencies: 5
inputs: official website
Answer: http://www.usaforafrica.org/