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During World War II , Wilkins served as a stoker in the Royal Navy ( in which he had served 1917-19 ) on the Q-ship s of the Irish coast .
 Wilkins, Royal Navy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Wilkins, Royal Navy