context: There is a very good chance that Bernhard is a swan. It is probably the case that Julius is green. We believe that Greg is white.
hypothesis: Chances are about even that either Julius is green, or Greg is white.
valid_hypothesis: Chances are about even that either Julius is green, or Greg is white.
invalid_hypothesis: There is almost no chance that either Julius is green, or Greg is white.
hypothesis_assertion: Either Julius is green, or Greg is white.