It is impossible that Brian is green. It is almost certain that Sandra dropped the apple. It is highly unlikely that Jessica is a sheep. It is highly unlikely that if Jessica is a sheep, and Brian is green, then Mary put down the milk. There is little chance that if Brian is green, or Jessica is a sheep, then Greg is a lion. It is likely that if Brian is green, and Sandra dropped the apple, then Bill went to the garden.
It is almost certain that either Brian is green, or Sandra dropped the apple.
It is almost certain that either Brian is green, or Sandra dropped the apple.
It is unlikely that either Brian is green, or Sandra dropped the apple.
Either Brian is green, or Sandra dropped the apple.