We doubt that Greg is a rhino. We believe that Sandra took the apple. It is highly unlikely that Lily is gray. Chances are about even that if Sandra took the apple, and Greg is a rhino, then Bill went to the garden. It is probably not the case that if Sandra took the apple, or Greg is a rhino, then Julius is gray. There is almost no chance that if either Sandra took the apple, or Greg is a rhino, then Brian is green.
It is highly likely that lily is gray, or Julius is gray.
It is probably not the case that lily is gray, or Julius is gray.
It is highly likely that lily is gray, or Julius is gray.
Lily is gray, or Julius is gray.