It is improbable that Brian is a lion. It is impossible that Greg is a rhino. We believe that John went to the hallway. It is unlikely that if Greg is a rhino, and John went to the hallway, then Sandra left the football. It is likely that if either Greg is a rhino, or Brian is a lion, then Bernhard is white. It is unlikely that if either John went to the hallway, or Brian is a lion, then Mary picked up the apple.
It is unlikely that mary picked up the apple, or Bernhard is white.
It is unlikely that mary picked up the apple, or Bernhard is white.
It is certain that mary picked up the apple, or Bernhard is white.
Mary picked up the apple, or Bernhard is white.