Question: Who coaches American football?
Choices: Any Given Sunday
Tom Johnson
Tennessee Titans
Andrew Jackson
basketball coach
make-up artist
head coach
Ed O'Neill
Houston Texans
seiyū
SPARQL: SELECT DISTINCT ?e WHERE { ?e <pred:instance_of> ?c . ?c <pred:name> "coach" . ?e <sport> ?e_1 . ?e_1 <pred:name> "American football" .   }
Program:
function: Find
inputs: American football
function: Relate
dependencies: 0
inputs: sport
backward
function: FilterConcept
dependencies: 1
inputs: coach
function: What
dependencies: 2
Answer: head coach