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Pietro Ayres ( November 9 , 1794 - Turin , June 11 , 1878 ) was an Italian painter , mostly of portraits in the Piedmont .
 Turin, Italian, Piedmont
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Turin, Italian, Piedmont