context: We doubt that Greg is a swan. Chances are slight that Julius is a rhino. It is improbable that Winona is a mouse. There is a better than even chance that if Winona is a mouse, and Greg is a swan, then Gertrude is a wolf. There is a better than even chance that if Winona is a mouse, or Julius is a rhino, then John went to the bedroom. It is impossible that if either Greg is a swan, or Winona is a mouse, then Mary got the milk.
hypothesis: Chances are slight that winona is a mouse, or Gertrude is a wolf.
valid_hypothesis: Chances are slight that winona is a mouse, or Gertrude is a wolf.
invalid_hypothesis: There is a very good chance that winona is a mouse, or Gertrude is a wolf.
hypothesis_assertion: Winona is a mouse, or Gertrude is a wolf.