There is almost no chance that Mary discarded the apple. Chances are slight that Brian is green. Chances are about even that Bernhard is a swan. Chances are about even that if either Bernhard is a swan, or Mary discarded the apple, then Winona is a wolf. It is highly unlikely that if either Brian is green, or Bernhard is a swan, then Bill went to the kitchen. We doubt that if Brian is green, or Mary discarded the apple, then Lily is yellow.
It is highly unlikely that either Bill went to the kitchen, or Lily is yellow.
It is highly unlikely that either Bill went to the kitchen, or Lily is yellow.
It is probable that either Bill went to the kitchen, or Lily is yellow.
Either Bill went to the kitchen, or Lily is yellow.