What stadium's operator is Stan Kroenke?
SELECT DISTINCT ?uri WHERE {?uri <http://dbpedia.org/ontology/operator> <http://dbpedia.org/resource/Stan_Kroenke>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Stadium>}
Stan_Kroenke