context: It is likely that Greg is a lion. There is a very good chance that Lily is gray. We doubt that Sandra left the milk.
hypothesis: There is almost no chance that either Greg is a lion, or Lily is gray.
valid_hypothesis: Chances are about even that either Greg is a lion, or Lily is gray.
invalid_hypothesis: There is almost no chance that either Greg is a lion, or Lily is gray.
hypothesis_assertion: Either Greg is a lion, or Lily is gray.