context: It is certain that Daniel took the football. There is a better than even chance that Bernhard is a swan. It is probably not the case that Greg is yellow.
hypothesis: It is almost certain that either Bernhard is a swan, or Daniel took the football.
valid_hypothesis: Chances are about even that either Bernhard is a swan, or Daniel took the football.
invalid_hypothesis: It is almost certain that either Bernhard is a swan, or Daniel took the football.
hypothesis_assertion: Either Bernhard is a swan, or Daniel took the football.