Premise: The Amazon River , usually abbreviated to Amazon ( [ ˈæməzɒn ] or [ ˈæməzən ] Spanish and Amazonas ) , in South America is the largest river by discharge volume of water in the world and according to some authors , the longest in length . The Amazon basin is the part of South America drained by the Amazon River and its tributaries . South America . The geography of western South America is dominated by the Andes mountains ; in contrast , the eastern part contains both highland regions and large lowlands where rivers such as the Amazon , Orinoco , and Paraná flow .
Hypothesis: South America has the Amazon River located within it.
Label: ENTAILMENT