There is a better than even chance that Brian is a lion. It is impossible that Greg is gray. It is certain that Mary went to the kitchen. Chances are about even that if either Greg is gray, or Brian is a lion, then Julius is a rhino. There is little chance that if either Mary went to the kitchen, or Greg is gray, then Bill dropped the milk. There is a better than even chance that if Mary went to the kitchen, or Brian is a lion, then Bernhard is a frog.
There is little chance that mary went to the kitchen, or Bill dropped the milk.
It is certain that mary went to the kitchen, or Bill dropped the milk.
There is little chance that mary went to the kitchen, or Bill dropped the milk.
Mary went to the kitchen, or Bill dropped the milk.