Chances are slight that Brian is green. There is little chance that Julius is a lion. Chances are slight that Mary took the milk. It is probably the case that if either Brian is green, or Julius is a lion, then Jason is bored. There is a better than even chance that if Brian is green, and Mary took the milk, then John left the apple. It is probably not the case that if either Julius is a lion, or Mary took the milk, then Bill went to the kitchen.
It is highly likely that either Bill went to the kitchen, or John left the apple.
It is highly unlikely that either Bill went to the kitchen, or John left the apple.
It is highly likely that either Bill went to the kitchen, or John left the apple.
Either Bill went to the kitchen, or John left the apple.