Question: What is the official website of the software license whose publisher is Apache Software Foundation ?
Choices: http://www.douglas.co.us
http://www.legend-the-movie.com
http://frankmillerink.com
https://www.apache.org/licenses/
http://www.rockhall.com/
http://www.utas.edu.au/
http://www.generationfame.com
http://agra.nic.in
http://www.danecook.com
http://www.co.union.oh.us
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "software license" . ?e <publisher> ?e_1 . ?e_1 <pred:name> "Apache Software Foundation" .  ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Apache Software Foundation
function: Relate
dependencies: 0
inputs: publisher
backward
function: FilterConcept
dependencies: 1
inputs: software license
function: QueryAttr
dependencies: 2
inputs: official website
Answer: https://www.apache.org/licenses/