There is a very good chance that John is in the office. There is almost no chance that Greg is a frog. Chances are about even that Sandra got the football.
It is highly unlikely that either Sandra got the football, or John is in the office.
Chances are about even that either Sandra got the football, or John is in the office.
It is highly unlikely that either Sandra got the football, or John is in the office.
Either Sandra got the football, or John is in the office.