<prompt> Translate the following text to SwahiliUnlike the original American suburbs, new master-planned communities like Summerlin and Green Valley are cities within themselves; in fact, they boast more square miles and more amenities than Las Vegas itself.  <response>: Tofauti na vitongoji vya awali vya Amerika, jamii mpya zilizopangwa kama Summerlin na Green Valley ni miji ndani yao wenyewe; kwa kweli, wana milima zaidi ya mraba na vifaa zaidi kuliko Las Vegas yenyewe. 