It is almost certain that Brian is yellow. We believe that Bill went to the hallway. It is almost certain that Greg is a lion.
It is improbable that greg is a lion, or Bill went to the hallway.
It is certain that greg is a lion, or Bill went to the hallway.
It is improbable that greg is a lion, or Bill went to the hallway.
Greg is a lion, or Bill went to the hallway.