Scientist say that the Grand Canyon and its even larger cousin to the south, Copper Canyon in Mexico, were created by millions of years of water erosion and "other earth changes."
(Scientist; say; that the Grand Canyon and its even larger cousin to the south, Copper Canyon in Mexico, were created by millions of years of water erosion and "other earth changes) Context(Scientist say,List([0, 13))):(the Grand Canyon and its even larger cousin to the south; were created; by millions of years of water erosion and "other earth changes)
Scientist say,List([0, 13))
Scientist the Grand Canyon and its even larger cousin to the south
say were created
that the Grand Canyon and its even larger cousin to the south, Copper Canyon in Mexico, were created by millions of years of water erosion and "other earth changes
by millions of years of water erosion and "other earth changes