<prompt> Translate the following text to SwahiliJapans austere, ruthless, but statesmanlike new ruler, Yoritomo Minamoto, set up his government in Kamakura just south of modern Tokyo, well away from the softening influence of court life that had been the undoing of his predecessor, Kiyomori.  <response>: Mtawala mpya wa Japani, Yoritomo Minamoto, ambaye alikuwa mkali, asiye na huruma, lakini mwenye tabia ya mwanasiasa, alianzisha serikali yake huko Kamakura kusini tu ya Tokyo ya kisasa, mbali sana na uvutano wa maisha ya kifalme ambayo yalikuwa yamemwangamiza Kiyomori. 