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Miatsum ( " unification " ) refers to the movement for the unification of Nagorno-Karabakh Autonomous Oblast of Soviet Azerbaijan to the Soviet Armenia during the late 1980s and early 1990s , which led to the Nagorno-Karabakh War in 1992-1994 .
 Nagorno-Karabakh, Azerbaijan, Soviet Armenia, Nagorno-Karabakh
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Nagorno-Karabakh, Azerbaijan, Soviet Armenia, Nagorno-Karabakh