context: It is impossible that Brian is a swan. There is a very good chance that Julius is gray. It is unlikely that Bernhard is a frog.
hypothesis: There is a very good chance that bernhard is a frog, and Brian is a swan.
valid_hypothesis: It is impossible that bernhard is a frog, and Brian is a swan.
invalid_hypothesis: There is a very good chance that bernhard is a frog, and Brian is a swan.
hypothesis_assertion: Bernhard is a frog, and Brian is a swan.