Give me a count of royalties buried in Rome ?
SELECT DISTINCT COUNT(?uri) WHERE {?uri <http://dbpedia.org/property/placeOfBurial> <http://dbpedia.org/resource/Rome>  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Royalty>}
Rome