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" Khmer sculpture " refers to the stone sculpture of the Khmer Empire , which ruled a territory based on modern Cambodia , but rather larger , from the 9th to the 13th century .
 Khmer Empire, Cambodia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Khmer Empire, Cambodia