context: There is a better than even chance that Sandra got the football. There is almost no chance that Mary dropped the milk. It is probably not the case that Brian is yellow.
hypothesis: It is impossible that mary dropped the milk, and Brian is yellow.
valid_hypothesis: It is impossible that mary dropped the milk, and Brian is yellow.
invalid_hypothesis: There is a very good chance that mary dropped the milk, and Brian is yellow.
hypothesis_assertion: Mary dropped the milk, and Brian is yellow.