Question: What is the Twitter username of the agent whose nickname is Cats?
Choices:
GeelongCats
SoundersFC
MiddlesexUni
Dbacks
joejonas
crvenazvezdafk
MontpellierHSC
sally_field
JohnJpshanley
UniWales
Answer: GeelongCats
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "agent" . ?e <nickname> ?pv_1 . ?pv_1 <pred:value> "Cats" . ?e <Twitter_username> ?pv .  }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: nickname
Cats
function: FilterConcept
dependencies: 1
inputs: agent
function: QueryAttr
dependencies: 2
inputs: Twitter username