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From 1998 to 2001 he was trained in the part-time postgraduate program of the Central Party School of the Communist Party of China , where he obtained a master 's degree in Economics .
 Central Party School of the Communist Party of China
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Central Party School of the Communist Party of China