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Biography Born in Żelechów in the Russian Empire ( today in Poland ) , Zisman was educated at a gymnasium , before studying law at the University of Warsaw .
 Żelechów, Russian Empire, Poland, Zisman, University of Warsaw
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Żelechów, Russian Empire, Poland, Zisman, University of Warsaw