Question: Who designed the stadiums which have been rented by Oakland athletics?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/tenant> <http://dbpedia.org/resource/Oakland_Athletics> . ?x <http://dbpedia.org/property/architect> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Stadium>}
Answer: The architects of the stadium whose tenant is Oakland Athletics are [Skidmore, Owings & Merrill, HNTB, Tate Snyder Kimsey Architects, R. Gary Allen Design Architects, 360, Gensler, Populous (company), Pittsburgh, Louis D. Astorino, Fawley Bryant Architects, Bradenton, Florida].