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She was born in Vienna , the sixth and youngest child of Sigmund Freud and Martha Bernays .
 Vienna, Sigmund Freud, Martha Bernays
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Vienna, Sigmund Freud, Martha Bernays