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( His brother who was killed in action over France in World War II would achieve the same rank in the Luftwaffe ) After leaving school in 1931 , he worked in a merchant shipping office and travelled to Leningrad and Murmansk .
 France, Luftwaffe, Leningrad, Murmansk
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 France, Luftwaffe, Leningrad, Murmansk