21702
While a large number of Hong Kong companies have reincorporated offshore ahead of 1997 , such a move is n't an option for Cathay because it would jeopardize its landing rights in Hong Kong .
 Hong Kong, 1997, Cathay, Hong Kong
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:
 Hong Kong, 1997, Cathay, Hong Kong