<prompt> Translate the following text to SwahiliOnce a major port on the south coast, Black River is now a small, sleepy town on the banks of the river from which it took its name.  <response>: Wakati mmoja mji huo ulikuwa bandari kubwa kwenye pwani ya kusini, lakini sasa ni mji mdogo ulio kando ya mto huo ambao uliitwa kwa jina lake. 