It is improbable that John dropped the apple. Chances are slight that Mary is in the cinema. It is impossible that Julius is a frog. It is probably the case that if John dropped the apple, and Mary is in the cinema, then Lily is a rhino. We believe that if Mary is in the cinema, and John dropped the apple, then Bernhard is a lion. There is a better than even chance that if Julius is a frog, and Mary is in the cinema, then Greg is yellow.
We doubt that either John dropped the apple, or Mary is in the cinema.
We doubt that either John dropped the apple, or Mary is in the cinema.
It is highly likely that either John dropped the apple, or Mary is in the cinema.
Either John dropped the apple, or Mary is in the cinema.