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The constitution , adopted by referendum in 2005 , and promulgated by President Joseph Kabila in February 2006 , establishes a decentralized semi-presidential republic , with a separation of powers between the three branches of government - executive , legislative and judiciary , and a distribution of prerogatives between the central government and the provinces .
 Joseph Kabila
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Joseph Kabila