Question: What is the official website of the association football club whose Twitter username is S04?
Choices: https://www.kernel.org/
http://www.surreycc.gov.uk/
http://www.itscomplicatedmovie.com/
http://www.silentbobspeaks.com/
http://www.toninoguerra.org/
http://www.jvcmusic.co.jp/maaya
http://www.cityofboston.gov/
https://schalke04.de/
http://www.guypearce.net/
http://www.geelong.vic.gov.au/
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "association football club" . ?e <Twitter_username> ?pv_1 . ?pv_1 <pred:value> "S04" . ?e <official_website> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: Twitter username
S04
function: FilterConcept
dependencies: 1
inputs: association football club
function: QueryAttr
dependencies: 2
inputs: official website
Answer: https://schalke04.de/