Question: Which association football club's headquarters match the city whose official name is San Francisco de Quito ?
Choices: Alianza Lima
Sheffield United F.C.
Red Star Belgrade
Rochdale A.F.C.
RCD Espanyol B
Portsmouth F.C.
Liga Deportiva Universitaria de Quito
Nottingham Forest F.C.
F.C. Hansa Rostock
1. FC Union Berlin
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "association football club" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:instance_of> ?c_1 . ?c_1 <pred:name> "city" . ?e_1 <official_name> ?pv . ?pv <pred:value> "San Francisco de Quito" .   }
Program:
function: FindAll
function: FilterStr
dependencies: 0
inputs: official name
San Francisco de Quito
function: FilterConcept
dependencies: 1
inputs: city
function: Relate
dependencies: 2
inputs: headquarters location
backward
function: FilterConcept
dependencies: 3
inputs: association football club
function: What
dependencies: 4
Answer: Liga Deportiva Universitaria de Quito