10581
As interactions between Taiwan and the PRC have grown , over the past few years there have been many cases of cooperative filming involving Taiwan , Hong Kong and mainland China , or of the hiring of technicians or performers from one area to work in another .
 Taiwan, PRC, Taiwan, Hong Kong, China
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 Taiwan, PRC, Taiwan, Hong Kong, China