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Boulton was the son of Mathew Robinson Boulton , and as well the grandson of Mathew Boulton who founded the Soho Manufactory and the Soho Mint .
 Boulton, Mathew Robinson Boulton, Mathew Boulton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Boulton, Mathew Robinson Boulton, Mathew Boulton