Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       Astra Plinius - celestial bodies
         Universe
           (Supercluster) Virgo-Hydra-Centaurus Supercluster
             (Supercluster) Virgo Supercluster
               (Cluster) Local Group
                 (Galaxy) Milky Way Galaxy veter.
                   (Spiral arm) Orion Arm
                     (Region) Local Bubble
                       Local Interstellar Cloud
                         (Planetary system) Solar System
                           (Planet-satellite system) Earth System
                             (Planet) Earth veter.
                               "spheres" (Earth)
                                 (Sphere) Hydrosphere (Earth) - layer of water
                                   (Drainage basin) Arctic Ocean Basin
                                     (Drainage basin) Lena Basin (Russia)
                                       0.722318N1264222E (Stream) Lena (Russia)
                                       1t (Drainage basin) Vilyuy Basin (Russia: Sakha (Yakutiya))
                                       2t.0.632649N1293318E (Stream) Aldan (Russia: Sakha (Yakutiya))
                                       2t.1t.602404N1343557E (Stream) Maya (Russia)
                                       2t.2t.584728N1303647E (Stream) Uchur (Russia)
                                       3t.0.602220N1204035E (Stream) Olëkma (Russia)
                                       3t.1t.601904N1205210E (Stream) Chara (Russia)
                                       4t.592649N1123502E (Stream) Vitim (Russia)