We doubt that Bernhard is a frog. It is certain that Bill put down the milk. It is impossible that Jessica is a wolf. It is probable that if Jessica is a wolf, or Bill put down the milk, then Brian is yellow. There is little chance that if either Bernhard is a frog, or Bill put down the milk, then Greg is green. It is probable that if either Bill put down the milk, or Jessica is a wolf, then Sandra left the apple.
It is probably not the case that either Bill put down the milk, or Sandra left the apple.
It is probably not the case that either Bill put down the milk, or Sandra left the apple.
It is probable that either Bill put down the milk, or Sandra left the apple.
Either Bill put down the milk, or Sandra left the apple.