context: It is impossible that John dropped the milk. It is certain that Greg is white. We doubt that Bernhard is green.
hypothesis: It is impossible that john dropped the milk, and Greg is white.
valid_hypothesis: It is impossible that john dropped the milk, and Greg is white.
invalid_hypothesis: There is a very good chance that john dropped the milk, and Greg is white.
hypothesis_assertion: John dropped the milk, and Greg is white.