context: It is probably not the case that Bernhard is a swan. There is a better than even chance that Julius is a lion. There is almost no chance that Greg is yellow.
hypothesis: There is almost no chance that julius is a lion, and Greg is yellow.
valid_hypothesis: There is almost no chance that julius is a lion, and Greg is yellow.
invalid_hypothesis: Chances are about even that julius is a lion, and Greg is yellow.
hypothesis_assertion: Julius is a lion, and Greg is yellow.