context: We doubt that Greg is gray. There is a very good chance that Mary put down the apple. It is impossible that John got the football.
hypothesis: There is a very good chance that mary put down the apple, or Greg is gray.
valid_hypothesis: There is a very good chance that mary put down the apple, or Greg is gray.
invalid_hypothesis: Chances are slight that mary put down the apple, or Greg is gray.
hypothesis_assertion: Mary put down the apple, or Greg is gray.