Individual #Great_Wall_of_China__Great_Wall  a wall in northern China built for defensive purposes during the 3rd century BC; 1,500 miles long and averaging 6 meters wide
  instance of:  #wall
  part of:  #China__People's_Republic_of_China__mainland_China__Communist_China__Red_China__PRC  a communist nation that covers a vast territory in eastern Asia; the most populous country in the world
     part of:  #Asia  the largest continent with 60% of the earth's population; it is joined to Europe on the west to form Eurasia; it is the site of some of the world's earliest civilizations
        part of:  #Eurasia  the land mass formed by the continents of Europe and Asia
           part of:  #eastern_hemisphere__easternhemisphere__orient  the hemisphere that includes Eurasia and Africa and Australia
           part of:  #northern_hemisphere  the hemisphere north of the equator

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