context: Chances are about even that Julius is gray. It is probable that Brian is a frog. It is probably the case that Winona is a wolf. There is little chance that if Julius is gray, or Winona is a wolf, then Yann is thirsty. There is almost no chance that if Winona is a wolf, and Brian is a frog, then Bernhard is a rhino. It is likely that if Brian is a frog, and Winona is a wolf, then Mary grabbed the milk.
hypothesis: It is impossible that bernhard is a rhino, and Brian is a frog.
valid_hypothesis: It is impossible that bernhard is a rhino, and Brian is a frog.
invalid_hypothesis: It is probable that bernhard is a rhino, and Brian is a frog.
hypothesis_assertion: Bernhard is a rhino, and Brian is a frog.