context: It is probable that Greg is a frog. There is a better than even chance that Mary went to the bedroom. It is probably the case that Julius is gray.
hypothesis: It is certain that mary went to the bedroom, and Julius is gray.
valid_hypothesis: Chances are about even that mary went to the bedroom, and Julius is gray.
invalid_hypothesis: It is certain that mary went to the bedroom, and Julius is gray.
hypothesis_assertion: Mary went to the bedroom, and Julius is gray.