We doubt that Jeff dropped the apple. It is probable that Mary went to the bedroom. Chances are about even that Julius is a rhino. It is probably not the case that if either Jeff dropped the apple, or Julius is a rhino, then Lily is white. It is highly likely that if either Mary went to the bedroom, or Jeff dropped the apple, then Greg is a lion. It is improbable that if Jeff dropped the apple, and Mary went to the bedroom, then Bernhard is a swan.
We believe that mary went to the bedroom, or Jeff dropped the apple.
We believe that mary went to the bedroom, or Jeff dropped the apple.
There is little chance that mary went to the bedroom, or Jeff dropped the apple.
Mary went to the bedroom, or Jeff dropped the apple.