It is probably not the case that Lily is a swan. There is almost no chance that Julius is a frog. We doubt that Daniel grabbed the milk.
It is probably not the case that lily is a swan, or Julius is a frog.
It is probably not the case that lily is a swan, or Julius is a frog.
It is probable that lily is a swan, or Julius is a frog.
Lily is a swan, or Julius is a frog.