context: It is unlikely that Brian is a rhino. It is improbable that Greg is gray. We doubt that Lily is a lion.
hypothesis: It is probably not the case that either Greg is gray, or Brian is a rhino.
valid_hypothesis: It is probably not the case that either Greg is gray, or Brian is a rhino.
invalid_hypothesis: It is highly likely that either Greg is gray, or Brian is a rhino.
hypothesis_assertion: Either Greg is gray, or Brian is a rhino.