context: It is probably the case that Bernhard is yellow. It is impossible that Greg is a swan. Chances are about even that Julius is white.
hypothesis: It is unlikely that bernhard is yellow, or Julius is white.
valid_hypothesis: There is a very good chance that bernhard is yellow, or Julius is white.
invalid_hypothesis: It is unlikely that bernhard is yellow, or Julius is white.
hypothesis_assertion: Bernhard is yellow, or Julius is white.