context: There is almost no chance that Brian is a frog. It is probably not the case that Julius is white. It is highly unlikely that Sandra grabbed the milk. It is probably the case that if Julius is white, or Brian is a frog, then Gertrude is a mouse. It is unlikely that if Brian is a frog, and Sandra grabbed the milk, then Mary went to the garden. There is almost no chance that if Sandra grabbed the milk, and Brian is a frog, then Bernhard is gray.
hypothesis: It is impossible that bernhard is gray, and Julius is white.
valid_hypothesis: It is impossible that bernhard is gray, and Julius is white.
invalid_hypothesis: It is highly likely that bernhard is gray, and Julius is white.
hypothesis_assertion: Bernhard is gray, and Julius is white.