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In the 1956 , resident of number 15 The Villas , Arnold Machin , received publicity in the national press when he chained himself to the old metal lamp-post on the turning circle in protest at its planned removal .
 Arnold Machin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Arnold Machin