It is certain that John left the apple. It is unlikely that Lily is a lion. There is a very good chance that Julius is a rhino. There is little chance that if Julius is a rhino, or John left the apple, then Brian is a swan. It is likely that if either Julius is a rhino, or Lily is a lion, then Fred went to the bedroom. It is likely that if either Julius is a rhino, or Lily is a lion, then Mary is in the garden.
There is almost no chance that either John left the apple, or Mary is in the garden.
Chances are about even that either John left the apple, or Mary is in the garden.
There is almost no chance that either John left the apple, or Mary is in the garden.
Either John left the apple, or Mary is in the garden.