context: It is almost certain that Mary moved to the office. It is impossible that Sandra got the football. We doubt that Jeff dropped the apple.
hypothesis: It is probable that jeff dropped the apple, and Sandra got the football.
valid_hypothesis: It is impossible that jeff dropped the apple, and Sandra got the football.
invalid_hypothesis: It is probable that jeff dropped the apple, and Sandra got the football.
hypothesis_assertion: Jeff dropped the apple, and Sandra got the football.