Question: Who were the american football players who played for Dallas Cowboys?
SPARQL query: 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>}
Answer: The players> whose teams played for is Dallas Cowboys are [answer].