Question: What is the official website for the United States city that is the twin administrative body to Lake Charles?
Choices:
http://chhattisgarh.nic.in/
http://www.csufresno.edu
https://cochinmunicipalcorporation.kerala.gov.in/
http://www.sioux-city.org
http://clubtiburonesrojos.mx
http://www.scottbaio.com
http://www.richardchamberlain.net
http://www.universalstudiosentertainment.com/schindlers-list/
http://www.cityofpalmdesert.org/
http://www.lacalle13.com/
Answer: http://www.sioux-city.org
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "city of the United States" . ?e <twinned_administrative_body> ?e_1 . ?e_1 <pred:name> "Lake Charles" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Lake Charles
function: Relate
dependencies: 0
inputs: twinned administrative body
backward
function: FilterConcept
dependencies: 1
inputs: city of the United States
function: QueryAttr
dependencies: 2
inputs: official website