Question: Which association-football club has Yuma (the one whose position is midfielder) as a member?
Choices: Cardiff City F.C.
Notts County F.C.
North Carolina FC
Rayo Vallecano
West Bromwich Albion F.C.
Zamalek SC
Middlesbrough F.C.
Stade Brestois 29
Brisbane Roar FC
Wigan Athletic F.C.
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "association football club" . ?e_1 <member_of_sports_team> ?e . ?e_1 <pred:name> "Yuma" . ?e_1 <position_played_on_team_/_speciality> ?e_2 . ?e_2 <pred:name> "midfielder" .   }
Program:
function: Find
inputs: midfielder
function: Relate
dependencies: 0
inputs: position played on team / speciality
backward
function: Find
inputs: Yuma
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: member of sports team
forward
function: FilterConcept
dependencies: 4
inputs: association football club
function: What
dependencies: 5
Answer: Rayo Vallecano