4584
It was rumored that Madame Gerepzof extorted from her rival some 10,000 pounds before turning her attention to the Prince Regent , whose mistress she is said to have become .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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