Question: Which soccer club associated with the sport of association football is officially named ПФК ЛеФски?
Choices: Sangju Sangmu FC
Stade Brestois 29
Brisbane Roar FC
Nottingham Forest F.C.
Zamalek SC
PFC Levski Sofia
Middlesbrough F.C.
Professional Football Club Central Sports Club of Army Moscow
Hereford United F.C.
Columbus Crew SC
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "association football club" . ?e <sport> ?e_1 . ?e_1 <pred:name> "association football" .  ?e <official_name> ?pv . ?pv <pred:value> "ПФК ЛеФски" .  }
Program:
function: Find
inputs: association football
function: Relate
dependencies: 0
inputs: sport
backward
function: FilterConcept
dependencies: 1
inputs: association football club
function: FindAll
function: FilterStr
dependencies: 3
inputs: official name
ПФК ЛеФски
function: FilterConcept
dependencies: 4
inputs: association football club
function: And
dependencies: 2
5
function: What
dependencies: 6
Answer: PFC Levski Sofia