Question: Who were the american football players who played for Dallas Cowboys?
SPARQL:
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/team> <http://dbpedia.org/resource/Dallas_Cowboys>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/AmericanFootballPlayer>}