context: It is probably the case that Lily is a rhino. There is a better than even chance that Bernhard is a swan. It is probably not the case that Brian is a frog.
hypothesis: Chances are about even that lily is a rhino, and Bernhard is a swan.
valid_hypothesis: Chances are about even that lily is a rhino, and Bernhard is a swan.
invalid_hypothesis: It is almost certain that lily is a rhino, and Bernhard is a swan.
hypothesis_assertion: Lily is a rhino, and Bernhard is a swan.