context: Chances are about even that Greg is gray. There is a better than even chance that Mary took the apple. It is impossible that Lily is a rhino.
hypothesis: It is impossible that mary took the apple, and Lily is a rhino.
valid_hypothesis: It is impossible that mary took the apple, and Lily is a rhino.
invalid_hypothesis: There is a better than even chance that mary took the apple, and Lily is a rhino.
hypothesis_assertion: Mary took the apple, and Lily is a rhino.