context: It is impossible that John went to the bedroom. It is certain that Brian is a lion. It is probable that Mary discarded the milk.
hypothesis: It is probably not the case that either Brian is a lion, or Mary discarded the milk.
valid_hypothesis: It is probably not the case that either Brian is a lion, or Mary discarded the milk.
invalid_hypothesis: There is a very good chance that either Brian is a lion, or Mary discarded the milk.
hypothesis_assertion: Either Brian is a lion, or Mary discarded the milk.