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In 1975 , the couple purchased Hôtel Lambert on the Île Saint-Louis , one of the most luxurious mansions in Paris , where they took up residence in the top floors .
 Hôtel Lambert, Île Saint-Louis, Paris
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hôtel Lambert, Île Saint-Louis, Paris