Question: On Twitter, what is the username of the association football club headquartered in Tallinn?
Choices: MGH_8
lindsaylohan
LOSC_EN
UWyonews
warrenellis
FCDM_official
levadiafc
JudgeCarter
NHLBruins
WhiteSox
SPARQL: SELECT DISTINCT ?pv WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "association football club" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:name> "Tallinn" .  ?e <Twitter_username> ?pv .  }
Program:
function: Find
inputs: Tallinn
function: Relate
dependencies: 0
inputs: headquarters location
backward
function: FilterConcept
dependencies: 1
inputs: association football club
function: QueryAttr
dependencies: 2
inputs: Twitter username
Answer: levadiafc