<prompt> Qedela umusho olandelayo: Lokhu kuchitheka kukaphethiloli kungokwesibili ngobukhulu e-United States, kudlulwa kuphela i-Deepwater Horizon ne-  <response>: Ukuchitheka kukawoyela e-Exxon Valdez. Kwaholela ekwandisweni koMnyango Wezangaphakathi endaweni yokulondoloza esiteshini futhi kwafaka isandla ekwakhiweni kwe-Environmental Protection Agency. 