Question: Siena is the headquarters of which soccer club?
Choices: Selangor FA
Arsenal F.C.
Stade Brestois 29
F.C. Copenhagen
Robur Siena
Brisbane Roar FC
FSV Frankfurt
En Avant de Guingamp
Middlesbrough F.C.
Torino Football Club
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "association football club" . ?e <headquarters_location> ?e_1 . ?e_1 <pred:name> "Siena" .   }
Program:
function: Find
inputs: Siena
function: Relate
dependencies: 0
inputs: headquarters location
backward
function: FilterConcept
dependencies: 1
inputs: association football club
function: What
dependencies: 2
Answer: Robur Siena