Chances are about even that Bernhard is a lion. It is certain that Mary went to the office. Chances are about even that Brian is gray. It is probable that if Mary went to the office, or Bernhard is a lion, then Fred is in the kitchen. There is a very good chance that if either Brian is gray, or Mary went to the office, then John picked up the milk. There is a better than even chance that if either Mary went to the office, or Bernhard is a lion, then Julius is a swan.
There is almost no chance that either John picked up the milk, or Mary went to the office.
There is a better than even chance that either John picked up the milk, or Mary went to the office.
There is almost no chance that either John picked up the milk, or Mary went to the office.
Either John picked up the milk, or Mary went to the office.