Question: What is the Twitter username of John Carter whose official website is http://carter.house.gov?
Choices:
anthonyshead
Pitbull
JudgeCarter
AuburnU
DollyParton
UniLeiden
montpellier_
OfficialRUFC
xmenmovies
JohnDukeWayne
Answer: JudgeCarter
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:name> "John Carter" . ?e <official_website> ?pv_1 . ?pv_1 <pred:value> "http://carter.house.gov" . ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: John Carter
function: FilterStr
dependencies: 0
inputs: official website
http://carter.house.gov
function: QueryAttr
dependencies: 1
inputs: Twitter username