context: It is unlikely that Bernhard is a swan. There is a better than even chance that John left the milk. It is almost certain that Julius is yellow. It is probably the case that if Bernhard is a swan, or Julius is yellow, then Mary went to the bedroom. It is probably the case that if either John left the milk, or Julius is yellow, then Brian is gray. It is probably not the case that if Bernhard is a swan, or Julius is yellow, then Lily is a rhino.
hypothesis: We doubt that either Bernhard is a swan, or Julius is yellow.
valid_hypothesis: We believe that either Bernhard is a swan, or Julius is yellow.
invalid_hypothesis: We doubt that either Bernhard is a swan, or Julius is yellow.
hypothesis_assertion: Either Bernhard is a swan, or Julius is yellow.