context: It is probably the case that Emily is a wolf. Chances are slight that John discarded the milk. It is impossible that Bill went to the garden. There is a better than even chance that if Bill went to the garden, and John discarded the milk, then Bernhard is a lion. There is a better than even chance that if either Emily is a wolf, or Bill went to the garden, then Greg is white. It is certain that if either John discarded the milk, or Bill went to the garden, then Sandra got the apple.
hypothesis: Chances are about even that bernhard is a lion, and Sandra got the apple.
valid_hypothesis: It is impossible that bernhard is a lion, and Sandra got the apple.
invalid_hypothesis: Chances are about even that bernhard is a lion, and Sandra got the apple.
hypothesis_assertion: Bernhard is a lion, and Sandra got the apple.