context: It is certain that Bernhard is a lion. It is improbable that Daniel got the milk. It is highly likely that Julius is gray. We doubt that if Daniel got the milk, or Bernhard is a lion, then John went to the garden. Chances are slight that if Julius is gray, or Bernhard is a lion, then Mary moved to the office. It is certain that if Bernhard is a lion, and Daniel got the milk, then Greg is a swan.
hypothesis: Chances are about even that bernhard is a lion, or Greg is a swan.
valid_hypothesis: It is certain that bernhard is a lion, or Greg is a swan.
invalid_hypothesis: Chances are about even that bernhard is a lion, or Greg is a swan.
hypothesis_assertion: Bernhard is a lion, or Greg is a swan.