context: 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.
hypothesis: There is little chance that either Greg is green, or Mary moved to the garden.
valid_hypothesis: There is a better than even chance that either Greg is green, or Mary moved to the garden.
invalid_hypothesis: There is little chance that either Greg is green, or Mary moved to the garden.
hypothesis_assertion: Either Greg is green, or Mary moved to the garden.