178796
From 2000 to 2009 , his photographs were exhibited at the Photographic Resource Center in Boston ( United States ) , at the State Russian Museum in Saint-Petersburg , and at the Affordable Art Fair in London .
 Boston
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Boston