<prompt> Translate the following text to SwahiliIt was begun around 355 b.c. at the behest of the king the word mausoleum is derived from his name and remained standing until at least the 12th century.  <response>: Mausoleum ilianzishwa karibu 355 KK kwa amri ya mfalme neno mausoleum linatokana na jina lake na ilibaki hadi angalau karne ya 12. 