context: There is a very good chance that Mary took the apple. It is impossible that Lily is a rhino. Chances are slight that John went to the hallway. We believe that if either Mary took the apple, or John went to the hallway, then Brian is gray. It is probably the case that if Mary took the apple, or John went to the hallway, then Julius is a swan. Chances are about even that if Lily is a rhino, and Mary took the apple, then Sandra grabbed the milk.
hypothesis: It is probably not the case that sandra grabbed the milk, or Mary took the apple.
valid_hypothesis: There is a very good chance that sandra grabbed the milk, or Mary took the apple.
invalid_hypothesis: It is probably not the case that sandra grabbed the milk, or Mary took the apple.
hypothesis_assertion: Sandra grabbed the milk, or Mary took the apple.