<prompt> Translate the following text to SwahiliEconomist George Gilder now speaks of Americas cities as centers of value subtraction--parasites that suck social and economic vitality from the rest of the country.  <response>: Mtaalamu wa uchumi George Gilder anasema kuwa miji ya Marekani ni vituo vya kuondoa thamani, vimelea vinavyomnyunyiza maisha ya kijamii na kiuchumi kutoka kwa nchi nzima. 