context: There is a better than even chance that Mary dropped the milk. There is little chance that Brian is green. It is likely that John discarded the apple.
hypothesis: It is impossible that john discarded the apple, and Mary dropped the milk.
valid_hypothesis: Chances are about even that john discarded the apple, and Mary dropped the milk.
invalid_hypothesis: It is impossible that john discarded the apple, and Mary dropped the milk.
hypothesis_assertion: John discarded the apple, and Mary dropped the milk.