48548
The most important philosophers of this movement were Wang Bi , Xiang Xiu and Guo Xiang .
 Wang Bi, Xiang Xiu, Guo Xiang
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Wang Bi, Xiang Xiu, Guo Xiang