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Riegelmann was one of five children born to Frederick and Margret Riegelmann ( Swiss ) on Manhattan 's Lower East Side .
 Riegelmann, Riegelmann
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Riegelmann, Riegelmann