context: It is unlikely that Emily is a wolf. It is probably not the case that Julius is gray. It is highly unlikely that Brian is green. We doubt that if either Emily is a wolf, or Julius is gray, then Bernhard is white. Chances are about even that if Brian is green, and Julius is gray, then Antoine is hungry. It is improbable that if either Brian is green, or Julius is gray, then Greg is a swan.
hypothesis: It is improbable that either Bernhard is white, or Greg is a swan.
valid_hypothesis: It is improbable that either Bernhard is white, or Greg is a swan.
invalid_hypothesis: It is likely that either Bernhard is white, or Greg is a swan.
hypothesis_assertion: Either Bernhard is white, or Greg is a swan.