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Sōsō Mōtoku ( 曹操 孟德 , Chinese : Cáo Cāo Mèngdé ) is the Japanese spelling of the name of the historical figure Cao Cao .
 Cao Cao
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cao Cao