Individual #Ryukyu_Islands  a chain of 55 islands in the western Pacific southwest of Japan (returned by United States to Japan in 1972)
  instance of:  #archipelago
  part of:  #Japan
  part:  #Okinawa  the largest island of the central Ryukyu Islands
     part:  #Okinawa_campaign__Okinawa  a campaign in the closing days of World War II in the Pacific (April to June 1945); in savage close-quarter fighting US marines and regular army troops took the island from the Japanese; considered the greatest victory of the Pacific campaign for the Americans
     part:  #Naha_City  the chief city in the Ryukyu Islands

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