context: Chances are about even that Julius is a rhino. There is a better than even chance that Greg is a frog. It is probably not the case that Mary took the apple. There is little chance that if Julius is a rhino, or Greg is a frog, then Lily is yellow. It is improbable that if Julius is a rhino, or Greg is a frog, then John discarded the milk. It is probable that if either Julius is a rhino, or Mary took the apple, then Fred is in the bedroom.
hypothesis: There is almost no chance that mary took the apple, and Lily is yellow.
valid_hypothesis: There is almost no chance that mary took the apple, and Lily is yellow.
invalid_hypothesis: It is almost certain that mary took the apple, and Lily is yellow.
hypothesis_assertion: Mary took the apple, and Lily is yellow.