Give me the total number of commander of the military conflicts whose commander is Roundhead (Wyandot).
SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/property/commander> <http://dbpedia.org/resource/Roundhead_(Wyandot)> . ?x <http://dbpedia.org/ontology/commander> ?uri }
Roundhead_(Wyandot)