Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Caelum veter. - region of the fixed stars
         (Constellation) Cygnus veter. - Cyg
           (Star system) HD 188753
             1 (Planetary system) HD 188753 A
             2 (Star) HD 188753 B
             3 (Star) HD 188753 C