<prompt> Translate the following text to SwahiliHowever, little evidence remains of that era some ceramics in the museum, a few fortifications, a network of irrigation ditches.  <response>: Hata hivyo, kuna uthibitisho mdogo uliobaki wa enzi hiyo - baadhi ya vyombo vya udongo katika jumba la makumbusho, ngome chache, na mifereji ya mifereji ya umwagiliaji. 