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Liu Kuo-sung ( Liu Guosong ) ( Simplified Chinese : 刘国松 ; Traditional Chinese : 劉國松 ; Pinyin : Liu Guosong ; born 1932 ) is a Chinese artist based in Shanghai and Taoyuan , Taiwan .
 Liu, Liu Guosong, Liu Guosong
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Liu, Liu Guosong, Liu Guosong