context: It is highly unlikely that Brian is gray. It is probably the case that Bernhard is white. It is unlikely that Mary moved to the garden. There is little chance that if either Mary moved to the garden, or Brian is gray, then Gertrude is a cat. There is a very good chance that if either Brian is gray, or Bernhard is white, then Greg is a lion. It is highly likely that if Brian is gray, or Bernhard is white, then Daniel grabbed the milk.
hypothesis: Chances are about even that bernhard is white, and Greg is a lion.
valid_hypothesis: Chances are about even that bernhard is white, and Greg is a lion.
invalid_hypothesis: There is almost no chance that bernhard is white, and Greg is a lion.
hypothesis_assertion: Bernhard is white, and Greg is a lion.