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Marton returned to Europe in 1927 , and worked as the main editor of the Tobis company in Berlin , and later as an assistant director in Vienna .
 Marton, Berlin, Vienna
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marton, Berlin, Vienna