Natura - nature
   ficta - fictional entities
     fictional entities
       "Harry Potter" Rowling, 1997
         1 Hogwarts School of Witchcraft and Wizardry Rowling, 1997
         2.1 Dementor Rowling, 1999
         2.2 Demiguise Rowling, 2001
         2.3 Graphorn Rowling, 2001
         2.4 Thestral Rowling, 2003
         3 bezoar sensu Rowling, 1997
         4 (Phenomenon) apparition sensu Rowling, 1999