context: It is improbable that Lily is a rhino. It is probably the case that Greg is gray. There is almost no chance that Julius is a lion.
hypothesis: There is a better than even chance that julius is a lion, and Greg is gray.
valid_hypothesis: There is almost no chance that julius is a lion, and Greg is gray.
invalid_hypothesis: There is a better than even chance that julius is a lion, and Greg is gray.
hypothesis_assertion: Julius is a lion, and Greg is gray.