context: We believe that Julius is a swan. There is a better than even chance that Greg is yellow. There is almost no chance that John got the apple.
hypothesis: Chances are about even that either Julius is a swan, or Greg is yellow.
valid_hypothesis: Chances are about even that either Julius is a swan, or Greg is yellow.
invalid_hypothesis: It is certain that either Julius is a swan, or Greg is yellow.
hypothesis_assertion: Either Julius is a swan, or Greg is yellow.