context: It is unlikely that Bernhard is gray. It is certain that Greg is a swan. It is impossible that Brian is white.
hypothesis: There is almost no chance that bernhard is gray, or Greg is a swan.
valid_hypothesis: It is certain that bernhard is gray, or Greg is a swan.
invalid_hypothesis: There is almost no chance that bernhard is gray, or Greg is a swan.
hypothesis_assertion: Bernhard is gray, or Greg is a swan.