Question: What is the official website of the American football team that is named after Buffalo?
Choices: http://www.wyclef.com/
http://www.buffalobills.com
http://bls.org/
http://www.sega.com/ironman2/us/index.html
http://www.cmu.edu/
http://www.droylsdenfc.com/
http://www.starwars.com/tv-shows/star-wars-the-clone-wars
http://co.fairbanks.ak.us/
http://coldplay.com/
https://jamescamerononline.com
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "American football team" . ?e <named_after> ?e_1 . ?e_1 <pred:name> "Buffalo" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Buffalo
function: Relate
dependencies: 0
inputs: named after
backward
function: FilterConcept
dependencies: 1
inputs: American football team
function: QueryAttr
dependencies: 2
inputs: official website
Answer: http://www.buffalobills.com