SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/National_League> <http://dbpedia.org/property/champion> ?uri }
Name the champion of National League?
SELECT DISTINCT ?b WHERE { resource:National_League property:champion ?b }
New York Mets
[New York Mets] is the champion of National League.
[New York Mets] are National League champions.