context: It is almost certain that Sandra got the football. It is likely that Daniel put down the milk. We doubt that Lily is yellow.
hypothesis: It is unlikely that lily is yellow, and Sandra got the football.
valid_hypothesis: It is unlikely that lily is yellow, and Sandra got the football.
invalid_hypothesis: It is certain that lily is yellow, and Sandra got the football.
hypothesis_assertion: Lily is yellow, and Sandra got the football.