context: It is unlikely that Brian is gray. There is a better than even chance that Mary moved to the garden. We believe that Greg is green. There is a very good chance that if either Brian is gray, or Mary moved to the garden, then Daniel got the apple. It is unlikely that if Brian is gray, or Mary moved to the garden, then Bill dropped the milk. It is unlikely that if Mary moved to the garden, or Brian is gray, then Julius is a frog.
hypothesis: It is probably not the case that bill dropped the milk, or Brian is gray.
valid_hypothesis: It is probably not the case that bill dropped the milk, or Brian is gray.
invalid_hypothesis: It is certain that bill dropped the milk, or Brian is gray.
hypothesis_assertion: Bill dropped the milk, or Brian is gray.