context: It is improbable that Bernhard is a lion. It is unlikely that Julius is white. It is impossible that Gertrude is a cat. It is improbable that if either Bernhard is a lion, or Julius is white, then Brian is a frog. There is a very good chance that if Julius is white, or Gertrude is a cat, then John is in the bedroom. It is unlikely that if Bernhard is a lion, or Gertrude is a cat, then Mary got the apple.
hypothesis: Chances are slight that bernhard is a lion, or Brian is a frog.
valid_hypothesis: Chances are slight that bernhard is a lion, or Brian is a frog.
invalid_hypothesis: We believe that bernhard is a lion, or Brian is a frog.
hypothesis_assertion: Bernhard is a lion, or Brian is a frog.