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Sir David , was educated Clifton College and Trinity College , Oxford , in 1910 , originally joined the Admiralty as an Admiralty Clerk Class I , but transferred the very next year to the India Office as a junior clerk in the Correspondence Department .
 Clifton College, Trinity College , Oxford, Admiralty, Admiralty
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Clifton College, Trinity College , Oxford, Admiralty, Admiralty