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 system) Atlantic Ocean Basin
                                     (Drainage system) Eurafrican Mediterranean Sea Basin
                                       (Drainage system) Nile River Basin (Africa)
                                         (Drainage system) White Nile Basin
                                           (Drainage system) Lake No Basin
                                             (Drainage system) Lake Albert Basin
                                               (Drainage system) Victoria Nile Basin
                                                 1 (Stream) Victoria Nile (Uganda)
                                                 1.1 (Lake) Lake Kyoga (Uganda)
                                                 2 (Drainage system) Lake Victoria Basin