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The processing trade occupies a crucial position in the development of foreign economy and trade in Guangdong and at the same time is important content in the economic and trade cooperation between Guangdong , Hong Kong , Macao and Taiwan .
 Guangdong, Guangdong, Hong Kong, Macao, Taiwan
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:
 Guangdong, Guangdong, Hong Kong, Macao, Taiwan