<prompt> Pedzisa mutsara unotevera: Muna 2007 mushumo weUnited States Environmental Protection Agency pamusoro pekudonha wakawedzera kukura kunofungidzirwa kwenzvimbo yakasvibiswa uye huwandu hunofungidzirwa hwekudonha kusvika ku, zvakapetwa katatu kudarika  <response>: Exxon Valdez yakasviba. Mushumo wacho wakatsoropodzawo nhamburiko dzokudzorera uye kunonoka kuchangobva kuitika kwokuchenesa. 