context: It is certain that Bernhard is a swan. Chances are about even that John dropped the milk. It is probable that Julius is yellow.
hypothesis: It is unlikely that julius is yellow, and Bernhard is a swan.
valid_hypothesis: It is likely that julius is yellow, and Bernhard is a swan.
invalid_hypothesis: It is unlikely that julius is yellow, and Bernhard is a swan.
hypothesis_assertion: Julius is yellow, and Bernhard is a swan.