She theorized that soft sands in the Middle East would have made a two-wheeled precursor of the chariot impractical , and pointed to the four-wheeled carriages discovered by Sir Leonard Woolley in the so-called King 's Tomb in Ur , a Sumerian city that flourished in Lower Mesopotamia -LRB- now Iraq -RRB- about 4,500 years ago .
Middle East /location/location/contains Iraq
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Middle East
LOCATION
Iraq
LOCATION
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