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Ilona married Duke Georg Alexander of Mecklenburg civilly on 20 February 1946 and religiously on 30 April 1946 in Sigmaringen , Württemberg-Hohenzollern during the allied occupation of Germany .
 Ilona, Duke Georg Alexander of Mecklenburg, Sigmaringen
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ilona, Duke Georg Alexander of Mecklenburg, Sigmaringen