Question: Which website represents Peter Stone, who works for the University of Texas at Austin?
Choices: http://www.gaga.co.jp/cinemas/detail/231
http://www.cs.utexas.edu/~pstone/
http://www.coventry.gov.uk/
http://www.pbs.org/jefferson/
http://marykayplacefan.yolasite.com/
http://www.maccabi.co.il/
http://www.lboro.ac.uk/services/planning/facts-figures/
https://www.ontario.ca
http://www.johncusack.net
http://www.fhfhaiti.com
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Peter Stone" . ?e <employer> ?e_1 . ?e_1 <pred:name> "University of Texas at Austin" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: University of Texas at Austin
function: Relate
dependencies: 0
inputs: employer
backward
function: Find
inputs: Peter Stone
function: And
dependencies: 1
2
function: QueryAttr
dependencies: 3
inputs: official website
Answer: http://www.cs.utexas.edu/~pstone/