<prompt> Pedzisa mutsara unotevera: Kuputsika uku ndiko kuputsika kukuru kwepeturu kwechitatu muUnited States, kuchipfuurwa bedzi neDeepwater Horizon uye  <response>: Exxon Valdez inodonha mafuta. Yakaguma nokuwedzerwa kweDhipatimendi reMukati meBuffer Zone muChannel uye yakabatsira pakuumbwa kweEnvironmental Protection Agency. 