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Accompanying them were eight armoured cruisers ( classified by the Royal Navy since 1913 as " cruisers " ) , eight light cruisers , four scout cruisers , 51 destroyers , and one destroyer-minelayer .
 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:
 Royal Navy