context: There is a very good chance that Lily is a frog. There is almost no chance that John grabbed the milk. We believe that Bill went to the kitchen. Chances are about even that if Bill went to the kitchen, and Lily is a frog, then Bernhard is gray. It is highly unlikely that if Lily is a frog, or John grabbed the milk, then Greg is a rhino. Chances are slight that if John grabbed the milk, and Bill went to the kitchen, then Sumit is thirsty.
hypothesis: It is impossible that sumit is thirsty, and Bill went to the kitchen.
valid_hypothesis: It is impossible that sumit is thirsty, and Bill went to the kitchen.
invalid_hypothesis: It is probable that sumit is thirsty, and Bill went to the kitchen.
hypothesis_assertion: Sumit is thirsty, and Bill went to the kitchen.