context: It is likely that Brian is a rhino. We doubt that John took the milk. There is a better than even chance that Jessica is a cat.
hypothesis: It is almost certain that john took the milk, and Brian is a rhino.
valid_hypothesis: Chances are slight that john took the milk, and Brian is a rhino.
invalid_hypothesis: It is almost certain that john took the milk, and Brian is a rhino.
hypothesis_assertion: John took the milk, and Brian is a rhino.