We doubt that Greg is a rhino. We believe that Sandra got the milk. It is likely that Winona is a wolf. Chances are about even that if either Winona is a wolf, or Greg is a rhino, then John went to the garden. It is improbable that if either Winona is a wolf, or Sandra got the milk, then Mary dropped the apple. It is probably not the case that if Sandra got the milk, or Greg is a rhino, then Julius is a frog.
It is improbable that mary dropped the apple, or Sandra got the milk.
We believe that mary dropped the apple, or Sandra got the milk.
It is improbable that mary dropped the apple, or Sandra got the milk.
Mary dropped the apple, or Sandra got the milk.