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History The ideas of the economic zone has been around since 2001 , when Fujian province was undergoing strong economic growth and the Fujian provincial government thought it needed to be competitive with other economic zones such as the Pearl River Delta and the Yangtze River Delta economic zones .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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