context: It is unlikely that Bernhard is a swan. It is likely that Greg is a lion. It is likely that Julius is green.
hypothesis: Chances are about even that julius is green, and Greg is a lion.
valid_hypothesis: Chances are about even that julius is green, and Greg is a lion.
invalid_hypothesis: It is certain that julius is green, and Greg is a lion.
hypothesis_assertion: Julius is green, and Greg is a lion.