context: There is a better than even chance that Fred went to the hallway. It is impossible that Lily is a rhino. There is a better than even chance that John took the apple. There is little chance that if John took the apple, and Lily is a rhino, then Sumit is thirsty. Chances are slight that if Lily is a rhino, or John took the apple, then Sandra left the apple. It is improbable that if John took the apple, or Lily is a rhino, then Bernhard is a lion.
hypothesis: It is impossible that sumit is thirsty, and Sandra left the apple.
valid_hypothesis: It is impossible that sumit is thirsty, and Sandra left the apple.
invalid_hypothesis: Chances are about even that sumit is thirsty, and Sandra left the apple.
hypothesis_assertion: Sumit is thirsty, and Sandra left the apple.