<prompt> Pedzisa mutsara unotevera: Muna March 1989, bhiri raibvumira kuchera mudura racho rakanga richifamba neSeneti uye rakanga rava kutarisirwa kuti riiswe kuvhoti apo  <response>: Kuputika kwemafuta kweExxon Valdez kwakakonzera kunonoka uye pakupedzisira kukanganisa nzira yacho. 