context: It is unlikely that John dropped the apple. It is improbable that Brian is gray. It is likely that Julius is white. We believe that if Brian is gray, or Julius is white, then Lily is a rhino. There is a better than even chance that if Brian is gray, or John dropped the apple, then Mary is in the bedroom. It is probably not the case that if Brian is gray, and Julius is white, then Bernhard is a lion.
hypothesis: Chances are slight that either Bernhard is a lion, or Brian is gray.
valid_hypothesis: Chances are slight that either Bernhard is a lion, or Brian is gray.
invalid_hypothesis: There is a very good chance that either Bernhard is a lion, or Brian is gray.
hypothesis_assertion: Either Bernhard is a lion, or Brian is gray.