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The superior at Georgetown , Father John Grassi , S.J. , shortly after sailed for Rome and took Barber with him as a novice .
 Georgetown, John Grassi, Barber
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Georgetown, John Grassi, Barber