context: There is a better than even chance that Lily is a rhino. Chances are slight that Julius is a swan. It is likely that Jessica is a wolf. There is a very good chance that if Lily is a rhino, or Jessica is a wolf, then Brian is gray. There is a better than even chance that if Jessica is a wolf, and Julius is a swan, then Winona is a wolf. There is little chance that if either Jessica is a wolf, or Julius is a swan, then Bernhard is white.
hypothesis: It is probably the case that either Brian is gray, or Julius is a swan.
valid_hypothesis: It is probably the case that either Brian is gray, or Julius is a swan.
invalid_hypothesis: It is unlikely that either Brian is gray, or Julius is a swan.
hypothesis_assertion: Either Brian is gray, or Julius is a swan.