context: There is a very good chance that Bill dropped the apple. It is probable that Mary discarded the milk. We believe that Greg is a swan.
hypothesis: It is almost certain that bill dropped the apple, or Greg is a swan.
valid_hypothesis: It is almost certain that bill dropped the apple, or Greg is a swan.
invalid_hypothesis: There is almost no chance that bill dropped the apple, or Greg is a swan.
hypothesis_assertion: Bill dropped the apple, or Greg is a swan.