context: There is a very good chance that Brian is gray. It is unlikely that Mary moved to the garden. Chances are about even that John got the apple.
hypothesis: We doubt that mary moved to the garden, and Brian is gray.
valid_hypothesis: We doubt that mary moved to the garden, and Brian is gray.
invalid_hypothesis: It is likely that mary moved to the garden, and Brian is gray.
hypothesis_assertion: Mary moved to the garden, and Brian is gray.