<prompt> Gadzira shanduro yakaoma zvikuru yemutsara uyu Duke Island chitsuwa chiri muGravina Islands yeAlexander Archipelago muchikamu chekumaodzanyemba kwakadziva kumabvazuva kweU.S. nyika yeAlaska.  <response>: Zvechokwadi, shanduro yakaoma zvikuru yemutsara ndeyekuti Duke Island chitsuwa chiri muGravina Islands yeAlexander Archipelago kumaodzanyemba kwakadziva kumabvazuva kweAlaska, pa, kuchamhembe kwemuganhu weCanada. 