context: It is likely that Greg is gray. Chances are slight that Bernhard is a swan. It is almost certain that John dropped the apple.
hypothesis: We believe that bernhard is a swan, or Greg is gray.
valid_hypothesis: We believe that bernhard is a swan, or Greg is gray.
invalid_hypothesis: It is unlikely that bernhard is a swan, or Greg is gray.
hypothesis_assertion: Bernhard is a swan, or Greg is gray.