It is highly likely that John grabbed the milk. It is unlikely that Lily is a frog. Chances are slight that Mary moved to the office.
It is highly likely that lily is a frog, or John grabbed the milk.
It is highly likely that lily is a frog, or John grabbed the milk.
There is almost no chance that lily is a frog, or John grabbed the milk.
Lily is a frog, or John grabbed the milk.