106442
Huadian Group , Huaneng Group , and Datang Group also have Hong Kong listed subsidiaries , in each case with the word " International " added to the title .
 Huadian Group, Huaneng Group, Datang Group, Hong Kong
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Huadian Group, Huaneng Group, Datang Group, Hong Kong