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Playfair designed Regent , Royal and Carlton Terraces at the same time as part of an Eastern extension to the New Town that was planned to be even more magnificent than Craig 's original New Town .
 Playfair
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Playfair