<prompt> Translate the following text to SwahiliCreating a city boasting a major harbour, including a 500-metre- 1,640-foot- long breakwater, with little more than soft sand as a base, was undoubtedly a colossal feat of engineering.  <response>: Kuunda mji wenye bandari kubwa, ikiwa ni pamoja na breakwater yenye urefu wa mita 500 na mchanga laini kama msingi, bila shaka ilikuwa kazi kubwa ya uhandisi. 