context: It is probable that Bill put down the milk. It is certain that Bernhard is a frog. It is highly likely that Greg is a swan. We believe that if either Bill put down the milk, or Bernhard is a frog, then Mary went to the hallway. Chances are slight that if Bill put down the milk, or Greg is a swan, then Brian is gray. It is almost certain that if Bill put down the milk, and Bernhard is a frog, then John left the milk.
hypothesis: It is probably not the case that bernhard is a frog, and John left the milk.
valid_hypothesis: It is likely that bernhard is a frog, and John left the milk.
invalid_hypothesis: It is probably not the case that bernhard is a frog, and John left the milk.
hypothesis_assertion: Bernhard is a frog, and John left the milk.