It is unlikely that John got the apple. It is impossible that Greg is a frog. It is almost certain that Brian is a lion. It is unlikely that if Brian is a lion, and John got the apple, then Daniel left the milk. It is certain that if either Greg is a frog, or John got the apple, then Mary moved to the garden. It is improbable that if either John got the apple, or Brian is a lion, then Lily is a rhino.
We doubt that daniel left the milk, or John got the apple.
We doubt that daniel left the milk, or John got the apple.
It is probable that daniel left the milk, or John got the apple.
Daniel left the milk, or John got the apple.