Individual #Mesopotamia  the land between the Tigris and Euphrates; site of several ancient civilizations; part of what is now known as Iraq
  instance of:  geographical_area
  part:  Babylon  Babylonia  Assyria
  part of:  Iraq__Republic_of_Iraq__Al-Iraq__Irak  a republic in the Middle East in western Asia; the ancient civilization of Mesopotamia was in the area now known as Iraq
     part of:  Middle_East__Near_East  the area around the eastern Mediterranean; from Turkey to North Africa and eastward to Iran; the site of such ancient civilizations as Phoenicia and Babylon and Egypt and the birthplace of Judaism and Christianity and Islam; "the Middle East is the cradle of Western civilization"
     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

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