context: It is certain that Mary got the milk. There is almost no chance that Bill went to the garden. We believe that Brian is a lion. Chances are about even that if Mary got the milk, or Bill went to the garden, then Bernhard is a lion. We doubt that if Mary got the milk, and Bill went to the garden, then Julius is gray. We doubt that if either Bill went to the garden, or Brian is a lion, then Greg is a rhino.
hypothesis: There is almost no chance that bill went to the garden, or Julius is gray.
valid_hypothesis: There is almost no chance that bill went to the garden, or Julius is gray.
invalid_hypothesis: There is a better than even chance that bill went to the garden, or Julius is gray.
hypothesis_assertion: Bill went to the garden, or Julius is gray.