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Maximilien de Béthune , duc de Sully , former Superintendent of Finances to King Henri IV , purchased it on 23 February 1634 .
 Maximilien de Béthune , duc de Sully, Henri IV
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Maximilien de Béthune , duc de Sully, Henri IV