context: It is improbable that Julius is a swan. It is improbable that Brian is white. It is improbable that Jessica is a wolf.
hypothesis: It is unlikely that either Julius is a swan, or Brian is white.
valid_hypothesis: It is unlikely that either Julius is a swan, or Brian is white.
invalid_hypothesis: There is a very good chance that either Julius is a swan, or Brian is white.
hypothesis_assertion: Either Julius is a swan, or Brian is white.