There is a better than even chance that Bernhard is yellow. It is highly likely that John went to the kitchen. Chances are slight that Julius is a swan. Chances are about even that if Julius is a swan, and John went to the kitchen, then Gertrude is a sheep. It is highly likely that if Julius is a swan, or John went to the kitchen, then Brian is gray. Chances are slight that if John went to the kitchen, or Bernhard is yellow, then Lily is white.
There is almost no chance that either Bernhard is yellow, or Lily is white.
There is a better than even chance that either Bernhard is yellow, or Lily is white.
There is almost no chance that either Bernhard is yellow, or Lily is white.
Either Bernhard is yellow, or Lily is white.