context: It is certain that Greg is yellow. We doubt that Mary left the milk. It is probable that Julius is a rhino.
hypothesis: It is probable that either Greg is yellow, or Julius is a rhino.
valid_hypothesis: It is probably not the case that either Greg is yellow, or Julius is a rhino.
invalid_hypothesis: It is probable that either Greg is yellow, or Julius is a rhino.
hypothesis_assertion: Either Greg is yellow, or Julius is a rhino.