#dust_bowl  a region subject to dust storms; especially the central region of United States subject to dust storms in the 1930s
  supertype:  geographical_area__geographic_area__geographical_region__geographic_region  a demarcated area of the Earth
  part of:  Great_Plains  a vast prairie region extending from Alberta and Saskatchewan and Manitoba in Canada south through the west central United States into Texas; formerly inhabited by Native Americans
     part of:  North_America  a continent (the third largest) in the western hemisphere connected to South America by the Isthmus of Panama
        part of:  northern_hemisphere  the hemisphere north of the equator
        part of:  western_hemisphere__westernhemisphere__occident__New_World  the hemisphere that includes North and South America
        part of:  the_Americas__America  North and South America

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