Question: How many architects are there who have made something used by Oakland athletics?
SPARQL query: SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/tenant> <http://dbpedia.org/resource/Oakland_Athletics> . ?x <http://dbpedia.org/property/architect> ?uri  . }
Answer: There are [11] architect of the stadia whose tenant is Oakland Athletics .