context: There is a better than even chance that Julius is a swan. There is almost no chance that Greg is yellow. It is impossible that Brian is gray.
hypothesis: There is a better than even chance that either Greg is yellow, or Julius is a swan.
valid_hypothesis: There is a better than even chance that either Greg is yellow, or Julius is a swan.
invalid_hypothesis: There is little chance that either Greg is yellow, or Julius is a swan.
hypothesis_assertion: Either Greg is yellow, or Julius is a swan.