13584
Rupucura was located on both shores of the Cholchol River , from entrance of the Colpi River , to the Cautín River , and from the Cautin , from hills of Nielol to the Nahuelbuta Range .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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