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Bernd Gersdorff ( born 18 November 1946 in Berlin-Wilmersdorf ) is a retired German football player .
 Bernd Gersdorff, German
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bernd Gersdorff, German