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In a 1991 interview , Jewish Holocaust survivor and Nazi hunter Simon Wiesenthal said , " The Stasi was much , much worse than the Gestapo , if you consider only the oppression of its own people .
 Simon Wiesenthal, Stasi, Gestapo
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Simon Wiesenthal, Stasi, Gestapo