Question: What is the official website for the person who uses Punjabi as their native language?
Choices:
http://www.errolflynn.net
http://www.lonchaney.tk/
http://www.warnerbros.com/batman-motion-picture-anthology/
http://www.comune.mantova.gov.it/
http://www.sfcenter.ku.edu/campbell.htm
http://www.bodiddley.com
http://www.jiangsu.gov.cn
http://akshaykumar.org
http://www.citycouncilofnairobi.go.ke/
http://www.theamazingspidermangame.com/
Answer: http://akshaykumar.org
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <native_language> ?e_1 . ?e_1 <pred:name> "Punjabi" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Punjabi
function: Relate
dependencies: 0
inputs: native language
backward
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: official website