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Beckwith officiated in 22 VFL matches as a boundary umpire in 1928 and 1929 , the last of which was the 1929 Grand Final .
 Beckwith
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Beckwith