context: It is probable that Mary dropped the milk. We believe that Greg is a swan. It is likely that Bernhard is gray.
hypothesis: Chances are about even that mary dropped the milk, and Greg is a swan.
valid_hypothesis: Chances are about even that mary dropped the milk, and Greg is a swan.
invalid_hypothesis: It is almost certain that mary dropped the milk, and Greg is a swan.
hypothesis_assertion: Mary dropped the milk, and Greg is a swan.