context: There is almost no chance that John dropped the apple. There is a better than even chance that Bernhard is gray. We believe that Julius is a rhino. It is impossible that if Julius is a rhino, and Bernhard is gray, then Brian is a swan. It is likely that if Julius is a rhino, and John dropped the apple, then Greg is yellow. It is unlikely that if Julius is a rhino, and John dropped the apple, then Fred is in the park.
hypothesis: Chances are slight that bernhard is gray, or John dropped the apple.
valid_hypothesis: There is a better than even chance that bernhard is gray, or John dropped the apple.
invalid_hypothesis: Chances are slight that bernhard is gray, or John dropped the apple.
hypothesis_assertion: Bernhard is gray, or John dropped the apple.