Question: What is the official website for the basketball team that runs the Twitter account "celtics"?
Choices: http://www.ucsb.edu
http://www.billwyman.com/
http://www.enid.org
http://www.celtics.com/
http://www.dundee.ac.uk/
http://www.epicgames.com/
http://www.fultoncountyga.gov
http://www.skidmore.edu/
http://www.sarahpolley.org/
http://www.co.jefferson.ny.us
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "basketball team" . ?e <Twitter_username> ?pv_1 . ?pv_1 <pred:value> "celtics" . ?e <official_website> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
celtics
function: FilterConcept
dependencies: 1
inputs: basketball team
function: QueryAttr
dependencies: 2
inputs: official website
Answer: http://www.celtics.com/