It is probable that Bernhard is a lion. There is a very good chance that Mary went to the kitchen. There is little chance that Sandra left the football. It is impossible that if Bernhard is a lion, and Sandra left the football, then Julius is gray. It is almost certain that if Sandra left the football, or Mary went to the kitchen, then Greg is a swan. It is unlikely that if Mary went to the kitchen, or Sandra left the football, then Brian is white.
It is unlikely that either Brian is white, or Julius is gray.
It is unlikely that either Brian is white, or Julius is gray.
We believe that either Brian is white, or Julius is gray.
Either Brian is white, or Julius is gray.