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When the incumbent captain-coach , George Holden , injured his knee at the start of the 1919 VFL season , he was restricted to being an off-field coach and after seven games he was replaced by Melling .
 George Holden, Melling
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 George Holden, Melling