context: It is likely that Brian is a lion. It is improbable that Bill moved to the office. There is a very good chance that Lily is a swan. It is improbable that if either Lily is a swan, or Bill moved to the office, then Jason is bored. We doubt that if Lily is a swan, or Brian is a lion, then Bernhard is gray. Chances are slight that if either Brian is a lion, or Lily is a swan, then Fred went to the kitchen.
hypothesis: There is a very good chance that brian is a lion, and Bill moved to the office.
valid_hypothesis: It is highly unlikely that brian is a lion, and Bill moved to the office.
invalid_hypothesis: There is a very good chance that brian is a lion, and Bill moved to the office.
hypothesis_assertion: Brian is a lion, and Bill moved to the office.