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Biography Christoph Johan von Medem was born in the Mežotne manor , Semigallia in 13 August 1763 .
 von Medem, Mežotne
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 von Medem, Mežotne