It is certain that Winona is a cat. It is almost certain that Jeff discarded the apple. There is a better than even chance that Bernhard is a lion. We believe that if either Winona is a cat, or Jeff discarded the apple, then Brian is green. It is likely that if Jeff discarded the apple, and Winona is a cat, then Lily is white. Chances are slight that if either Bernhard is a lion, or Jeff discarded the apple, then Greg is yellow.
It is probable that either Greg is yellow, or Brian is green.
It is highly unlikely that either Greg is yellow, or Brian is green.
It is probable that either Greg is yellow, or Brian is green.
Either Greg is yellow, or Brian is green.