Question: What is American footballer David Arnold's position?
Choices: cornerback
long snapper
quarterback
lineman
punter
halfback
kickoff returner
wide receiver
tight end
placekicker
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "American football position" . ?e_1 <position_played_on_team_/_speciality> ?e . ?e_1 <pred:name> "David Arnold" . ?e_1 <sport> ?e_2 . ?e_2 <pred:name> "American football" .   }
Program:
function: Find
inputs: American football
function: Relate
dependencies: 0
inputs: sport
backward
function: Find
inputs: David Arnold
function: And
dependencies: 1
2
function: Relate
dependencies: 3
inputs: position played on team / speciality
forward
function: FilterConcept
dependencies: 4
inputs: American football position
function: What
dependencies: 5
Answer: cornerback