context: It is likely that Greg is gray. We doubt that Bill went to the cinema. It is highly unlikely that Brian is a rhino.
hypothesis: It is highly unlikely that either Greg is gray, or Bill went to the cinema.
valid_hypothesis: There is a better than even chance that either Greg is gray, or Bill went to the cinema.
invalid_hypothesis: It is highly unlikely that either Greg is gray, or Bill went to the cinema.
hypothesis_assertion: Either Greg is gray, or Bill went to the cinema.