Question: What is the official website of the association football club whose headquarter location is Kharkiv?
Choices:
http://www.pref.saitama.lg.jp
http://richardwright.net/
http://www.foxsearchlight.com/thankyouforsmoking/
http://www.blizzard.com
http://www.sonora.gob.mx/
http://www.torchwood.org.uk/
http://www.dallascowboys.com
https://www.sporting.be/
http://metalist.ua/
http://www.syrianskafc.com
Answer: http://metalist.ua/
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "association football club" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:name> "Kharkiv" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Kharkiv
function: Relate
dependencies: 0
inputs: headquarters location
backward
function: FilterConcept
dependencies: 1
inputs: association football club
function: QueryAttr
dependencies: 2
inputs: official website