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Background of the organization Youth Outreach was formed in 1991 due to the proposal of the Hong Kong Council of Social Service ( HKCSS ) to work for youth life crisis prevention and youth healthy development .
 Hong Kong Council of Social Service ( HKCSS )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hong Kong Council of Social Service ( HKCSS )