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He first played for University College Dublin A. F. C. before making his debut with Shamrock Rovers on 18 April 2008 .
 University College Dublin A. F. C.
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 University College Dublin A. F. C.