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Livestock predation by dholes has been a problem in Bhutan since the late 1990 s , as domestic animals are often left outside to graze in the forest , sometimes for weeks at a time .
 location: Bhutan
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Bhutan