context: Chances are about even that Lily is white. It is improbable that Greg is gray. We doubt that Antoine is tired.
hypothesis: It is highly unlikely that lily is white, and Greg is gray.
valid_hypothesis: It is highly unlikely that lily is white, and Greg is gray.
invalid_hypothesis: It is highly likely that lily is white, and Greg is gray.
hypothesis_assertion: Lily is white, and Greg is gray.