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) Atlantic Ocean Basin
                                     "Canada" (Atlantic coast)
                                       2.03.1 (Strait) Strait of Belle Isle (Canada)
                                       2.03.2.1 (Drainage basin) Saint Lawrence River Basin (North America)
                                       2.03.2.2 (Bay) Gulf of Saint Lawrence (Canada)
                                       2.03.3 (Sea) Cabot Strait (Canada)