context: It is probably not the case that Lily is a rhino. We believe that Sandra took the milk. It is certain that Brian is a swan.
hypothesis: We doubt that lily is a rhino, and Sandra took the milk.
valid_hypothesis: We doubt that lily is a rhino, and Sandra took the milk.
invalid_hypothesis: It is certain that lily is a rhino, and Sandra took the milk.
hypothesis_assertion: Lily is a rhino, and Sandra took the milk.