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 Tens of thousands of residents lighted white candles at a vigil in one of Hong Kong 's largest urban parks on Saturday night to commemorate the 16th anniversary of the Tiananmen Square killings , the latest sign of the emotional hold the event still has here and in mainland China . 
 Hong Kong, China; China, Hong Kong
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 Hong Kong, China; China, Hong Kong