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In the late 1960 s , against the backdrop of the reactionary and authoritarian government of General Juan Carlos Onganía , Buenos Aires was undergoing a cultural blossoming of new artistic expressions ; the new generation of the middle class was immersed in an effervescence that would not reappear in Argentina until the return to democracy in 1983 .
 person: Juan Carlos Onganía; location: Buenos Aires; location: Argentina
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:
 person: Juan Carlos Onganía; location: Buenos Aires; location: Argentina