It is impossible that Brian is gray. There is little chance that Julius is a frog. It is almost certain that Bernhard is green.
Chances are slight that either Bernhard is green, or Julius is a frog.
It is highly likely that either Bernhard is green, or Julius is a frog.
Chances are slight that either Bernhard is green, or Julius is a frog.
Either Bernhard is green, or Julius is a frog.