context: It is probable that Mary is in the garden. There is little chance that Brian is a swan. It is certain that Greg is a lion.
hypothesis: It is probably not the case that either Greg is a lion, or Mary is in the garden.
valid_hypothesis: It is probably not the case that either Greg is a lion, or Mary is in the garden.
invalid_hypothesis: We believe that either Greg is a lion, or Mary is in the garden.
hypothesis_assertion: Either Greg is a lion, or Mary is in the garden.