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Amherst Central Business District is a historic district at 1-79 Main Street , 13-31 North Pleasant Street , 1-79 South Pleasant Street , 1-18 Boltwood Avenue in Amherst , Massachusetts .
 Amherst, Amherst , Massachusetts
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Amherst, Amherst , Massachusetts