context: It is impossible that Brian is yellow. There is a very good chance that Lily is green. It is probably not the case that Daniel dropped the milk. It is highly likely that if Lily is green, and Daniel dropped the milk, then John discarded the milk. It is unlikely that if either Lily is green, or Daniel dropped the milk, then Gertrude is a cat. We doubt that if either Daniel dropped the milk, or Brian is yellow, then Bernhard is gray.
hypothesis: It is probable that lily is green, and Bernhard is gray.
valid_hypothesis: It is highly unlikely that lily is green, and Bernhard is gray.
invalid_hypothesis: It is probable that lily is green, and Bernhard is gray.
hypothesis_assertion: Lily is green, and Bernhard is gray.