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History Michal Menert was born in Kielce , Poland and spent his early years in Krakow , when Poland was still part of the Eastern Bloc , under the oppressive rule of the Soviet Union in the early 80 ’s .
 Kielce , Poland, Krakow, Poland, Soviet Union
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
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Answer:
 Kielce , Poland, Krakow, Poland, Soviet Union