Individual #Yalu_River  a battle in the Korean War (November 1950); when UN troops advanced north to the Yalu River 200,000 Chinese troops crossed the river and drove them back
  instance of:  pitched_battle
  part of:  Korean_War  a war between North and South Korea; South Korea was aided by the United States and other members of the United Nations; 1950-1953
     part of:  Korea__Korean_Peninsula__Choson  an Asian peninsula (off Manchuria) separating the Yellow Sea and the Sea of Japan; the Korean name is Choson
        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
  part of:  North_Korea__Democratic_People's_Republic_of_Korea  a communist country in the northern half of the Korean Peninsula; established in 1948
     part of:  Korea__Korean_Peninsula__Choson  an Asian peninsula (off Manchuria) separating the Yellow Sea and the Sea of Japan; the Korean name is Choson

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