Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Caelum veter. - region of the fixed stars
         (Constellation) Draco veter. - Dra
           (Star system) 31 Draconis
             174156.3+720856 (Star) 31 Draconis A
             174158.0+720925 (Star) 31 Draconis B