Count the number of cities around the American Mediterranean Sea?
SELECT DISTINCT COUNT(?uri) WHERE { <http://dbpedia.org/resource/American_Mediterranean_Sea> <http://dbpedia.org/property/cities> ?uri  . ?uri <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/City>}
American_Mediterranean_Sea