Question: What is the official website of the person whose Twitter username is celinedion?
Choices: http://www.celinedion.com/
http://disney.com/secretariat
http://www.norge.no
http://www.liamobrien.biz
http://www.foxsearchlight.com/
http://www.co.wood.wi.us
http://www.northamptoncounty.org
https://www.whitehouse.gov/1600/presidents/georgewbush
http://www.dangermousesite.com/
http://www.thejacksons.com/
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <Twitter_username> ?pv_1 . ?pv_1 <pred:value> "celinedion" . ?e <official_website> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
celinedion
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: official website
Answer: http://www.celinedion.com/