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Soon , he became interested in new artistic experiments , including those connected to space exploration : his painting " First men on the moon " produced many years before the actual feat , was acquired by the Kennedy Collection ; it was reproduced in 1969 in some American newspapers , coupled with the images coming from the moon .
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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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