context: There is a very good chance that Mary went to the kitchen. It is likely that Greg is a swan. Chances are about even that Bernhard is white.
hypothesis: It is improbable that mary went to the kitchen, and Greg is a swan.
valid_hypothesis: There is a better than even chance that mary went to the kitchen, and Greg is a swan.
invalid_hypothesis: It is improbable that mary went to the kitchen, and Greg is a swan.
hypothesis_assertion: Mary went to the kitchen, and Greg is a swan.