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Principal photography began on May 15 , 1989 ; production took place in northwestern Montana in the Kootenai National Forest , with some scenes filmed in and around Libby .
 Montana, Kootenai National Forest, Libby
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Montana, Kootenai National Forest, Libby