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He then served as Rhodes travelling fellow in 1930 , a civil servant in London from 1939 to 1942 , and PA to Arthur Harris in RAF Bomber Command at High Wycombe from 1942 to 1945 .
 Arthur Harris, RAF Bomber Command, High Wycombe
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Arthur Harris, RAF Bomber Command, High Wycombe