Question: What is the official website of Stephen King (the one whose Instagram username is stephenking)?
Choices:
http://www.city.hiroshima.lg.jp/
http://www.pontefractus.co.uk/
http://www.louisiana.edu
http://www.sonypictures.com/classics/city/
http://www.sonypictures.com/movies/lordsofdogtown/index-b.html
http://www.jaymohr.com
https://stephenking.com/
http://www.pku.edu.cn/
http://www.wandasykes.com
http://www.nbc.com/chicago-fire
Answer: https://stephenking.com/
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "Stephen King" . ?e <Instagram_username> ?pv_1 . ?pv_1 <pred:value> "stephenking" . ?e <official_website> ?pv .  }
Program:
function: Find
inputs: Stephen King
function: FilterStr
dependencies: 0
inputs: Instagram username
stephenking
function: QueryAttr
dependencies: 1
inputs: official website