context: We doubt that Bernhard is a swan. We doubt that Julius is a rhino. Chances are about even that Greg is yellow.
hypothesis: It is probably not the case that either Bernhard is a swan, or Julius is a rhino.
valid_hypothesis: It is probably not the case that either Bernhard is a swan, or Julius is a rhino.
invalid_hypothesis: It is likely that either Bernhard is a swan, or Julius is a rhino.
hypothesis_assertion: Either Bernhard is a swan, or Julius is a rhino.