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The depression continued to organise and strengthen , and the Joint Typhoon Warning Center issued a Tropical Cyclone Formation Alert on it during the afternoon of September 12 , and began issuing advisories on Tropical Depression 12W an hour later .
 Joint Typhoon Warning Center
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Joint Typhoon Warning Center