context: There is little chance that Bill went to the bedroom. It is certain that Jessica is a mouse. Chances are slight that Lily is a frog. It is almost certain that if Lily is a frog, and Bill went to the bedroom, then Bernhard is green. There is a better than even chance that if either Jessica is a mouse, or Bill went to the bedroom, then Sandra grabbed the milk. It is highly unlikely that if Lily is a frog, and Jessica is a mouse, then Winona is a cat.
hypothesis: Chances are about even that sandra grabbed the milk, and Jessica is a mouse.
valid_hypothesis: Chances are about even that sandra grabbed the milk, and Jessica is a mouse.
invalid_hypothesis: It is highly unlikely that sandra grabbed the milk, and Jessica is a mouse.
hypothesis_assertion: Sandra grabbed the milk, and Jessica is a mouse.