It is highly likely that Julius is white. It is almost certain that Bernhard is a swan. It is probably the case that Brian is a frog. It is certain that if Bernhard is a swan, or Brian is a frog, then John went to the hallway. It is improbable that if Bernhard is a swan, or Julius is white, then Sandra left the milk. Chances are slight that if Brian is a frog, or Bernhard is a swan, then Mary got the football.
We doubt that mary got the football, or Sandra left the milk.
We doubt that mary got the football, or Sandra left the milk.
There is a very good chance that mary got the football, or Sandra left the milk.
Mary got the football, or Sandra left the milk.