It is probably the case that Brian is a swan. It is likely that Fred is in the bedroom. We believe that Julius is a lion. It is almost certain that if either Brian is a swan, or Julius is a lion, then Greg is green. There is a better than even chance that if Fred is in the bedroom, or Julius is a lion, then Lily is yellow. Chances are about even that if Julius is a lion, or Brian is a swan, then Mary went to the bedroom.
It is certain that either Mary went to the bedroom, or Lily is yellow.
Chances are about even that either Mary went to the bedroom, or Lily is yellow.
It is certain that either Mary went to the bedroom, or Lily is yellow.
Either Mary went to the bedroom, or Lily is yellow.