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State Acceptance of Production ( ) , commonly abbreviated as State Acceptance ( ) , was a procedure of quality assurance of production of enterprises in late Soviet Union introduced under Mikhail Gorbachev within the framework of perestroika ( restructuring of Soviet economy and society ) .
 Soviet Union, Mikhail Gorbachev
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Soviet Union, Mikhail Gorbachev