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At Damaidi in Ningxia , 3,172 cliff carvings dating to 6000 – 5000 BC have been discovered , " featuring 8,453 individual characters such as the sun , moon , stars , gods and scenes of hunting or grazing " .
 Damaidi, Ningxia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Damaidi, Ningxia