context: It is almost certain that Daniel took the football. It is unlikely that Lily is gray. Chances are about even that Brian is a rhino. There is a very good chance that if Brian is a rhino, or Daniel took the football, then Bernhard is a lion. We believe that if Lily is gray, or Brian is a rhino, then John grabbed the milk. We believe that if Daniel took the football, and Brian is a rhino, then Gertrude is a mouse.
hypothesis: Chances are about even that brian is a rhino, and John grabbed the milk.
valid_hypothesis: Chances are about even that brian is a rhino, and John grabbed the milk.
invalid_hypothesis: It is impossible that brian is a rhino, and John grabbed the milk.
hypothesis_assertion: Brian is a rhino, and John grabbed the milk.