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The Killke culture occupied the South America n region around Cusco , Peru from 900 to 1200 AD , prior to the arrival of the Inca s in the 13th century .
 South America, Cusco, Peru
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 South America, Cusco, Peru