It is improbable that Brian is green. It is probably the case that Bernhard is a frog. It is certain that Fred is in the school. There is a very good chance that if either Fred is in the school, or Bernhard is a frog, then Julius is white. There is a better than even chance that if Fred is in the school, and Bernhard is a frog, then John went to the bedroom. Chances are about even that if either Bernhard is a frog, or Fred is in the school, then Lily is yellow.
It is probable that either Lily is yellow, or Julius is white.
It is improbable that either Lily is yellow, or Julius is white.
It is probable that either Lily is yellow, or Julius is white.
Either Lily is yellow, or Julius is white.