context: We believe that John went to the kitchen. It is improbable that Mary moved to the garden. It is unlikely that Winona is a cat. Chances are slight that if either John went to the kitchen, or Mary moved to the garden, then Greg is a lion. Chances are slight that if Winona is a cat, or Mary moved to the garden, then Bernhard is a swan. There is little chance that if either Winona is a cat, or Mary moved to the garden, then Brian is green.
hypothesis: It is highly unlikely that john went to the kitchen, or Winona is a cat.
valid_hypothesis: There is a very good chance that john went to the kitchen, or Winona is a cat.
invalid_hypothesis: It is highly unlikely that john went to the kitchen, or Winona is a cat.
hypothesis_assertion: John went to the kitchen, or Winona is a cat.