Question: What is the Twitter username of a person whose official website is  http://www.jcvd-online.com ?
Choices:
RollingStones
arrahman
joebiden
cher
UCSanDiego
jcvd
TV5manila
realronjeremy
meganfox
neildiamond
Answer: jcvd
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "human" . ?e <official_website> ?pv_1 . ?pv_1 <pred:value> "http://www.jcvd-online.com" . ?e <Twitter_username> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.jcvd-online.com
function: FilterConcept
dependencies: 1
inputs: human
function: QueryAttr
dependencies: 2
inputs: Twitter username