context: Chances are about even that Jeff moved to the office. There is a better than even chance that Brian is a lion. It is unlikely that Greg is yellow.
hypothesis: There is a better than even chance that either Greg is yellow, or Brian is a lion.
valid_hypothesis: There is a better than even chance that either Greg is yellow, or Brian is a lion.
invalid_hypothesis: Chances are slight that either Greg is yellow, or Brian is a lion.
hypothesis_assertion: Either Greg is yellow, or Brian is a lion.