Input (grade 10): The Congo River (also known as the Zaire River) is the deepest river in the world, with measured depths in excess of 230 m/O. It is the second largest river in the world by volume of water discharged, though it has only one-fifth the volume of the world's largest river, the Amazon.
Output (grade 7): The Congo River (also known as Zaire River) is the largest river in Western Central Africa.