context: It is improbable that Julius is a swan. There is a better than even chance that Greg is white. It is unlikely that Lily is gray.
hypothesis: There is a better than even chance that either Julius is a swan, or Greg is white.
valid_hypothesis: There is a better than even chance that either Julius is a swan, or Greg is white.
invalid_hypothesis: It is impossible that either Julius is a swan, or Greg is white.
hypothesis_assertion: Either Julius is a swan, or Greg is white.