context: It is almost certain that Mary dropped the milk. It is improbable that John moved to the garden. There is a better than even chance that Bill went to the bedroom. Chances are about even that if Bill went to the bedroom, or Mary dropped the milk, then Fred is in the park. It is probably not the case that if Bill went to the bedroom, and John moved to the garden, then Bernhard is white. It is probably the case that if either John moved to the garden, or Bill went to the bedroom, then Julius is gray.
hypothesis: It is impossible that bernhard is white, and Fred is in the park.
valid_hypothesis: It is impossible that bernhard is white, and Fred is in the park.
invalid_hypothesis: It is almost certain that bernhard is white, and Fred is in the park.
hypothesis_assertion: Bernhard is white, and Fred is in the park.