context: We doubt that Mary moved to the garden. It is probable that John dropped the milk. It is almost certain that Julius is yellow.
hypothesis: It is probably not the case that either John dropped the milk, or Julius is yellow.
valid_hypothesis: It is probably not the case that either John dropped the milk, or Julius is yellow.
invalid_hypothesis: It is certain that either John dropped the milk, or Julius is yellow.
hypothesis_assertion: Either John dropped the milk, or Julius is yellow.