We believe that Bernhard is a lion. There is little chance that Julius is a rhino. It is probably the case that Mary is in the bathroom.
We doubt that either Julius is a rhino, or Mary is in the bathroom.
It is probable that either Julius is a rhino, or Mary is in the bathroom.
We doubt that either Julius is a rhino, or Mary is in the bathroom.
Either Julius is a rhino, or Mary is in the bathroom.