context: There is a very good chance that Brian is gray. We believe that Bill is in the park. It is probably not the case that Sandra left the apple.
hypothesis: It is highly unlikely that brian is gray, and Bill is in the park.
valid_hypothesis: There is a better than even chance that brian is gray, and Bill is in the park.
invalid_hypothesis: It is highly unlikely that brian is gray, and Bill is in the park.
hypothesis_assertion: Brian is gray, and Bill is in the park.