It is probably the case that John left the football. It is unlikely that Brian is a swan. It is highly unlikely that Julius is yellow. It is highly likely that if John left the football, and Brian is a swan, then Greg is a rhino. It is highly unlikely that if John left the football, or Brian is a swan, then Mary dropped the apple. We believe that if either Julius is yellow, or John left the football, then Lily is a frog.
It is likely that either Julius is yellow, or John left the football.
It is likely that either Julius is yellow, or John left the football.
We doubt that either Julius is yellow, or John left the football.
Either Julius is yellow, or John left the football.