Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Caelum veter. - region of the fixed stars
         (Constellation) Cygnus veter. - Cyg
           (Star system) HD 188753
             (Planetary system) HD 188753 A
               1 (Star) HD 188753 A
               2 (Planet) HD 188753 Ab M. Konacki, 2005