context: We doubt that Sandra left the football. It is highly likely that Bernhard is a swan. We believe that Brian is a lion.
hypothesis: It is probably not the case that bernhard is a swan, and Brian is a lion.
valid_hypothesis: It is probable that bernhard is a swan, and Brian is a lion.
invalid_hypothesis: It is probably not the case that bernhard is a swan, and Brian is a lion.
hypothesis_assertion: Bernhard is a swan, and Brian is a lion.