context: We doubt that Mary put down the milk. We doubt that Fred is in the bedroom. There is almost no chance that Winona is a mouse. It is highly likely that if Mary put down the milk, or Fred is in the bedroom, then Brian is a frog. It is probably not the case that if Mary put down the milk, or Winona is a mouse, then Lily is white. There is a very good chance that if either Winona is a mouse, or Mary put down the milk, then John went to the kitchen.
hypothesis: It is unlikely that either Winona is a mouse, or John went to the kitchen.
valid_hypothesis: It is unlikely that either Winona is a mouse, or John went to the kitchen.
invalid_hypothesis: There is a very good chance that either Winona is a mouse, or John went to the kitchen.
hypothesis_assertion: Either Winona is a mouse, or John went to the kitchen.