Question: What is the official name of the association football club whose headquarter location is Tallinn?
Choices: TV Tokyo Corporation
City of Calgary
Dörpt
The New School for Social Research
Hull City Association Football Club
Montpellier
Социалистическая Федеративная Республика Югославия
Purdue University
Tallinna Football Club Levadia
Tamworth Football Club
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 <official_name> ?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: official name
Answer: Tallinna Football Club Levadia