Premise: Cannibalism . Cannibalism was widespread in the past among humans in many parts of the world , continuing into the 19th century in some isolated South Pacific cultures , and to the present day in parts of tropical Africa . Famous examples include the ill-fated Westward expedition of the Donner Party ( 1846-7 ) and , more recently , the crash of Uruguayan Air Force Flight 571 ( 1972 ) , after which some survivors ate the bodies of dead passengers .
Hypothesis: Cannibalism persisted into the 19th century.
Label: ENTAILMENT