context: It is almost certain that Bernhard is a lion. It is certain that Julius is gray. Chances are slight that Brian is a swan. It is likely that if Bernhard is a lion, and Julius is gray, then Lily is yellow. There is almost no chance that if either Brian is a swan, or Julius is gray, then Mary discarded the apple. It is probable that if Julius is gray, or Brian is a swan, then Bill dropped the milk.
hypothesis: It is unlikely that julius is gray, and Lily is yellow.
valid_hypothesis: It is likely that julius is gray, and Lily is yellow.
invalid_hypothesis: It is unlikely that julius is gray, and Lily is yellow.
hypothesis_assertion: Julius is gray, and Lily is yellow.