context: It is almost certain that Julius is a rhino. It is certain that Mary went to the bedroom. There is a better than even chance that John left the milk. It is probably not the case that if Mary went to the bedroom, or Julius is a rhino, then Bernhard is yellow. There is little chance that if Mary went to the bedroom, or Julius is a rhino, then Greg is a frog. It is likely that if Julius is a rhino, or John left the milk, then Brian is gray.
hypothesis: It is likely that brian is gray, and Julius is a rhino.
valid_hypothesis: It is likely that brian is gray, and Julius is a rhino.
invalid_hypothesis: There is little chance that brian is gray, and Julius is a rhino.
hypothesis_assertion: Brian is gray, and Julius is a rhino.