context: It is certain that Fred is in the bedroom. It is improbable that John went to the kitchen. There is almost no chance that Lily is a swan. There is a better than even chance that if either Fred is in the bedroom, or John went to the kitchen, then Bernhard is yellow. There is a better than even chance that if John went to the kitchen, or Fred is in the bedroom, then Greg is a lion. There is a very good chance that if John went to the kitchen, and Fred is in the bedroom, then Yann is thirsty.
hypothesis: Chances are slight that either Yann is thirsty, or Lily is a swan.
valid_hypothesis: Chances are slight that either Yann is thirsty, or Lily is a swan.
invalid_hypothesis: There is a better than even chance that either Yann is thirsty, or Lily is a swan.
hypothesis_assertion: Either Yann is thirsty, or Lily is a swan.