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While RAIOH has interviewed many leading politicians , diplomats and soldiers , it also tries to preserve for posterity the ideas , sentiments , experience , lives and what the French Annales School calls the mentalities of those not belonging to the elite — some of whom come from the lower middle-class and even the working class .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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