context: Chances are slight that Jeff went to the hallway. We believe that Lily is a swan. It is probably not the case that Julius is a lion.
hypothesis: We doubt that julius is a lion, or Lily is a swan.
valid_hypothesis: There is a very good chance that julius is a lion, or Lily is a swan.
invalid_hypothesis: We doubt that julius is a lion, or Lily is a swan.
hypothesis_assertion: Julius is a lion, or Lily is a swan.