393173
History The Merchants Exchange served as one of Boston 's " great gathering-points of the traders -- the marble-paved and frescoed hall ... with its newspaper files , bulletins , wind vane , and ship registry . "
 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