context: It is improbable that Daniel took the football. There is a better than even chance that Brian is a frog. It is probable that Bernhard is a swan. There is a better than even chance that if either Bernhard is a swan, or Brian is a frog, then Mary got the apple. It is improbable that if Bernhard is a swan, and Daniel took the football, then Lily is a rhino. There is a better than even chance that if Bernhard is a swan, and Brian is a frog, then John discarded the milk.
hypothesis: It is unlikely that bernhard is a swan, and Mary got the apple.
valid_hypothesis: It is unlikely that bernhard is a swan, and Mary got the apple.
invalid_hypothesis: It is probable that bernhard is a swan, and Mary got the apple.
hypothesis_assertion: Bernhard is a swan, and Mary got the apple.