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NATO-led peace troops beefed up their presence in the Doboj area on Sunday to deter any sudden emotional attempt by the refugees to cross the Inter-Entity Boundary Line into Doboj .
 Doboj, NATO-led, Doboj, Inter-Entity Boundary Line
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Doboj, NATO-led, Doboj, Inter-Entity Boundary Line