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) American Mediterranean Sea Basin (America)
                                       (Drainage system) Gulf of Mexico Basin
                                         (Drainage system) Mississippi River Basin (United States, Canada)
                                           (Drainage system) Missouri River Basin (United States, Canada)
                                             0.384849N0900711W (Stream) Missouri River (United States: Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, Missouri)
                                             01t.0.390655N0943638W (Stream) Kansas River (United States: Kansas: Wyandotte County)
                                             01t.s1.390336N0964804W (Stream) Smoky Hill River (United States: Kansas: Geary County)
                                             01t.s2.390336N0964805W (Stream) Republican River (United States: Kansas)
                                             02t.0.410314N0955253W (Stream) Platte River (United States: Nebraska: Cass County)
                                             02t.1t.412358N0971917W (Stream) Loup River (United States: Nebraska: Platte County)
                                             02t.s1.410648N1004038W (Stream) South Platte River (United States: Nebraska: Lincoln County)
                                             02t.s2.410650N1004033W (Stream) North Platte River (United States: Nebraska: Lincoln County)
                                             03t.422927N0962647W (Stream) Big Sioux River (United States: South Dakota: Union County)
                                             04t.425217N0971726W (Stream) James River (United States: South Dakota: Yankton County)
                                             05t.424558N0980250W (Stream) Niobrara River (United States: Nebraska: Knox County)
                                             06t.444436N1010405W (Stream) Cheyenne River (United States: South Dakota: Dewey County)
                                             07t.453437N1002817W (Stream) Grand River (United States: South Dakota: Corson County)
                                             08t.473638N1025224W (Stream) Little Missouri River (United States: North Dakota: Dunn County)
                                             09t.0.475842N1035856W (Stream) Yellowstone River (United States: North Dakota: McKenzie County)
                                             09t.1t.462433N1055200W (Stream) Tongue River (United States: Montana: Custer County)
                                             09t.2t.0.460918N1072828W (Stream) Bighorn River (United States: Montana: Yellowstone County)
                                             09t.2t.s.433452N1081244W (Stream) Wind River (United States: Wyoming: Hot Springs County)
                                             10.480326N1061907W (Stream) Milk River (United States: Montana: Valley County)