context: It is likely that Mary grabbed the milk. It is certain that Greg is a swan. It is likely that Julius is a rhino.
hypothesis: Chances are about even that either Mary grabbed the milk, or Julius is a rhino.
valid_hypothesis: Chances are about even that either Mary grabbed the milk, or Julius is a rhino.
invalid_hypothesis: It is certain that either Mary grabbed the milk, or Julius is a rhino.
hypothesis_assertion: Either Mary grabbed the milk, or Julius is a rhino.