SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/American_Football_League> <http://dbpedia.org/property/champion> ?uri }
Which team won the American Football League?
SELECT DISTINCT ?k WHERE { resource:American_Football_League property:champion ?k }
Kansas City Chiefs
The champion of the American Football League is [Kansas City Chiefs].
The American Football League champions are [Kansas City Chiefs].