context: We doubt that Brian is yellow. It is improbable that Winona is a wolf. It is likely that Bill got the milk there. There is almost no chance that if Bill got the milk there, or Brian is yellow, then Emily is a mouse. We believe that if Bill got the milk there, or Winona is a wolf, then Lily is a frog. There is almost no chance that if either Winona is a wolf, or Bill got the milk there, then John went to the bedroom.
hypothesis: Chances are slight that either John went to the bedroom, or Bill got the milk there.
valid_hypothesis: It is probably the case that either John went to the bedroom, or Bill got the milk there.
invalid_hypothesis: Chances are slight that either John went to the bedroom, or Bill got the milk there.
hypothesis_assertion: Either John went to the bedroom, or Bill got the milk there.