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The first congress ratified the Declaration of Boulogne , which established several foundational premises for the Esperanto movement ; one of its pronouncements is that " Fundamento de Esperanto " is the only obligatory authority over the language ; another is that the Esperanto movement is exclusively a linguistic movement and that no further meaning can ever be ascribed to it .
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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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