Question: What is the Twitter username of the rock band whose official website is http://www.hawkwind.com/?
Choices: katebeckinsale
iamsanthanam
lauradern
kingbmahal
HawkwindHQ
amandabynes
billyjoel
kaagent
RealPaulWalker
die_gruenen
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "rock band" . ?e <official_website> ?pv_1 . ?pv_1 <pred:value> "http://www.hawkwind.com/" . ?e <Twitter_username> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official website
http://www.hawkwind.com/
function: FilterConcept
dependencies: 1
inputs: rock band
function: QueryAttr
dependencies: 2
inputs: Twitter username
Answer: HawkwindHQ