context: We believe that Lily is a swan. Chances are about even that Sumit is thirsty. It is probable that Julius is gray. We believe that if either Lily is a swan, or Sumit is thirsty, then Jessica is a cat. There is almost no chance that if either Sumit is thirsty, or Lily is a swan, then John went to the garden. It is improbable that if Lily is a swan, and Sumit is thirsty, then Brian is green.
hypothesis: Chances are about even that brian is green, and Lily is a swan.
valid_hypothesis: It is highly unlikely that brian is green, and Lily is a swan.
invalid_hypothesis: Chances are about even that brian is green, and Lily is a swan.
hypothesis_assertion: Brian is green, and Lily is a swan.