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.
There is almost no chance that either John went to the bedroom, or Sandra left the milk.
There is a very good chance that either John went to the bedroom, or Sandra left the milk.
There is almost no chance that either John went to the bedroom, or Sandra left the milk.
Either John went to the bedroom, or Sandra left the milk.