context: It is probably the case that Mary got the football. It is highly likely that Greg is gray. We believe that Fred discarded the milk.
hypothesis: There is a better than even chance that mary got the football, and Greg is gray.
valid_hypothesis: There is a better than even chance that mary got the football, and Greg is gray.
invalid_hypothesis: There is little chance that mary got the football, and Greg is gray.
hypothesis_assertion: Mary got the football, and Greg is gray.