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Part of the Administration building , located at 31 Sung Wong Toi Road , Kowloon City , is used for the headquarters of the Hong Kong Air Cadet Corps through the courtesy of the Aviation Club .
 Kowloon City, Hong Kong Air Cadet Corps, Aviation
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Kowloon City, Hong Kong Air Cadet Corps, Aviation