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Participants Congolese delegation The following notable Congolese political movements and representatives were present : Besides a certain number of chefs coutumiers who were also invited to reduce the proportion of key independence figures in the Congolese delegation , it is also worth noting the presence of then journalist , and Patrice Lumumba 's secretary , Joseph Mobutu , who would later come to seize power during a coup in 1965 .
 Joseph Mobutu
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Answer:
 Joseph Mobutu