context: It is improbable that Sandra left the milk. There is almost no chance that Winona is a mouse. There is a better than even chance that Lily is a rhino. There is a very good chance that if either Winona is a mouse, or Sandra left the milk, then Mary went to the garden. Chances are about even that if Sandra left the milk, or Lily is a rhino, then Brian is white. It is unlikely that if Lily is a rhino, or Sandra left the milk, then Sumit is thirsty.
hypothesis: It is highly unlikely that brian is white, and Sumit is thirsty.
valid_hypothesis: It is highly unlikely that brian is white, and Sumit is thirsty.
invalid_hypothesis: It is highly likely that brian is white, and Sumit is thirsty.
hypothesis_assertion: Brian is white, and Sumit is thirsty.