context: It is probably not the case that Bernhard is a lion. We doubt that Greg is a rhino. There is a very good chance that Winona is a wolf. There is almost no chance that if either Greg is a rhino, or Bernhard is a lion, then Julius is a frog. There is little chance that if either Bernhard is a lion, or Winona is a wolf, then John went to the garden. Chances are about even that if either Bernhard is a lion, or Winona is a wolf, then Sandra grabbed the milk.
hypothesis: It is highly unlikely that bernhard is a lion, or Sandra grabbed the milk.
valid_hypothesis: There is a better than even chance that bernhard is a lion, or Sandra grabbed the milk.
invalid_hypothesis: It is highly unlikely that bernhard is a lion, or Sandra grabbed the milk.
hypothesis_assertion: Bernhard is a lion, or Sandra grabbed the milk.