context: It is certain that Lily is a swan. We believe that Bernhard is green. It is impossible that John went to the hallway.
hypothesis: It is probable that bernhard is green, and John went to the hallway.
valid_hypothesis: It is impossible that bernhard is green, and John went to the hallway.
invalid_hypothesis: It is probable that bernhard is green, and John went to the hallway.
hypothesis_assertion: Bernhard is green, and John went to the hallway.