<prompt> Translate the following text to SwahiliThe mysterious stone circles that dot the landscape are thought to be primitive calendars that helped the inhabitants decide when to plant and when to harvest.  <response>: Mzunguko wa mawe unaoonekana katika eneo hilo unaonekana kama kalenda ya kale ambayo iliwasaidia wakazi wa eneo hilo kuamua wakati wa kupanda na wakati wa kuvuna. 