It is highly unlikely that Julius is green. There is a better than even chance that Mary is in the hallway. There is a very good chance that Greg is a frog.
It is highly likely that greg is a frog, or Mary is in the hallway.
It is highly likely that greg is a frog, or Mary is in the hallway.
We doubt that greg is a frog, or Mary is in the hallway.
Greg is a frog, or Mary is in the hallway.