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From 1910 he worked in Paris where he maintained relations with the group of Pablo Picasso and George Braque and with the group of the Duchamp brothers ( Gaston , Raymond and Marcel ) in Puteaux where the first Section d'Or exposition was organized .
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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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