It is certain that Mary picked up the milk. There is a better than even chance that Julius is a rhino. It is probably not the case that Greg is yellow. It is probable that if Mary picked up the milk, and Julius is a rhino, then Jeff went to the kitchen. Chances are slight that if Greg is yellow, and Julius is a rhino, then Bernhard is a lion. There is a very good chance that if Mary picked up the milk, or Julius is a rhino, then Brian is gray.
It is certain that mary picked up the milk, or Greg is yellow.
It is certain that mary picked up the milk, or Greg is yellow.
We doubt that mary picked up the milk, or Greg is yellow.
Mary picked up the milk, or Greg is yellow.