It is probably not the case that Mary moved to the garden. It is probable that Greg is green. Chances are about even that Brian is gray.
There is little chance that either Greg is green, or Mary moved to the garden.
There is a better than even chance that either Greg is green, or Mary moved to the garden.
There is little chance that either Greg is green, or Mary moved to the garden.
Either Greg is green, or Mary moved to the garden.