context: It is probably the case that Brian is a lion. It is probably the case that Julius is green. There is a better than even chance that Bernhard is white. Chances are about even that if Julius is green, and Brian is a lion, then Mary went to the bedroom. It is likely that if Julius is green, or Brian is a lion, then Greg is a swan. It is improbable that if Bernhard is white, and Julius is green, then Gertrude is a mouse.
hypothesis: It is probable that gertrude is a mouse, and Brian is a lion.
valid_hypothesis: There is almost no chance that gertrude is a mouse, and Brian is a lion.
invalid_hypothesis: It is probable that gertrude is a mouse, and Brian is a lion.
hypothesis_assertion: Gertrude is a mouse, and Brian is a lion.