context: It is improbable that John dropped the milk. It is likely that Gertrude is a cat. It is certain that Bernhard is gray.
hypothesis: It is highly unlikely that gertrude is a cat, and John dropped the milk.
valid_hypothesis: It is highly unlikely that gertrude is a cat, and John dropped the milk.
invalid_hypothesis: We believe that gertrude is a cat, and John dropped the milk.
hypothesis_assertion: Gertrude is a cat, and John dropped the milk.