We doubt that Jessica is a mouse. Chances are about even that Fred moved to the office. It is unlikely that Greg is yellow. There is little chance that if Greg is yellow, and Jessica is a mouse, then Daniel took the football. There is a better than even chance that if either Fred moved to the office, or Greg is yellow, then Brian is a frog. Chances are about even that if either Greg is yellow, or Jessica is a mouse, then Mary put down the apple.
There is almost no chance that mary put down the apple, or Fred moved to the office.
There is a better than even chance that mary put down the apple, or Fred moved to the office.
There is almost no chance that mary put down the apple, or Fred moved to the office.
Mary put down the apple, or Fred moved to the office.