context: It is certain that John went to the bedroom. It is certain that Lily is a lion. We doubt that Julius is a swan. There is a better than even chance that if John went to the bedroom, or Julius is a swan, then Brian is white. It is impossible that if John went to the bedroom, or Julius is a swan, then Bernhard is yellow. There is a very good chance that if Julius is a swan, and John went to the bedroom, then Sandra left the milk.
hypothesis: There is almost no chance that either John went to the bedroom, or Sandra left the milk.
valid_hypothesis: There is a very good chance that either John went to the bedroom, or Sandra left the milk.
invalid_hypothesis: There is almost no chance that either John went to the bedroom, or Sandra left the milk.
hypothesis_assertion: Either John went to the bedroom, or Sandra left the milk.