context: Chances are about even that Julius is a swan. It is probably the case that John went to the hallway. It is unlikely that Winona is a mouse. There is a better than even chance that if Winona is a mouse, or Julius is a swan, then Sumit is thirsty. There is almost no chance that if either John went to the hallway, or Winona is a mouse, then Greg is a lion. We doubt that if Julius is a swan, and Winona is a mouse, then Lily is green.
hypothesis: There is almost no chance that julius is a swan, and Lily is green.
valid_hypothesis: There is almost no chance that julius is a swan, and Lily is green.
invalid_hypothesis: It is certain that julius is a swan, and Lily is green.
hypothesis_assertion: Julius is a swan, and Lily is green.