#geographical_zone__zone  any of the regions of the surface of the Earth loosely divided according to latitude or longitude
  supertype:  geographical_area__geographic_area__geographical_region__geographic_region  a demarcated area of the Earth
  subtype:  climatic_zone  any of the geographical zones loosely divided according to prevailing climate and latitude
     subtype:  Frigid_Zone__polar_zone__polarzone  the part of the Earth's surface forming a cap over a pole; characterized by frigid climate
        subtype:  Antarctic_Zone__Antarctic__South_Frigid_Zone  the region around the south pole: Antarctica and surrounding waters
        subtype:  Arctic_Zone__Arctic__North_Frigid_Zone  the regions north of the Arctic Circle centered on the North Pole
     subtype:  Temperate_Zone  the part of the Earth's surface between the Arctic Circle and the Tropic of Cancer or between the Antarctic Circle and the Tropic of Capricorn; characterized by temperate climate
        instance:  North_Temperate_Zone  South_Temperate_Zone
     subtype:  subtropics__semitropics__semitropic  regions adjacent to the tropics
     instance:  Torrid_Zone__tropical_zone__tropics
  subtype:  time_zone  any of the 24 regions of the globe (loosely divided by longitude) throughout which the same standard time is used

No statement uses or specializes geographical_zone; click here to add one.