context: It is impossible that Bill went to the garden. It is probable that Brian is a swan. Chances are about even that Julius is a rhino. There is almost no chance that if either Julius is a rhino, or Bill went to the garden, then Gertrude is a mouse. It is highly likely that if either Julius is a rhino, or Bill went to the garden, then John left the apple. It is highly likely that if either Bill went to the garden, or Brian is a swan, then Bernhard is a lion.
hypothesis: It is likely that bernhard is a lion, and John left the apple.
valid_hypothesis: It is probably not the case that bernhard is a lion, and John left the apple.
invalid_hypothesis: It is likely that bernhard is a lion, and John left the apple.
hypothesis_assertion: Bernhard is a lion, and John left the apple.