context: We doubt that Greg is gray. There is almost no chance that Lily is a swan. It is probable that Brian is white.
hypothesis: It is likely that lily is a swan, or Brian is white.
valid_hypothesis: It is likely that lily is a swan, or Brian is white.
invalid_hypothesis: It is highly unlikely that lily is a swan, or Brian is white.
hypothesis_assertion: Lily is a swan, or Brian is white.