1392
An assembly-line worker in China coughs as an American businessman stands nearby , the businessman has a drink at a Hong Kong airport , then boards a flight for Los Angeles , and the virus , which has mutated to allow human-to-human transmission , is on its way .
 Hong Kong, China; China, Hong Kong; China, Hong Kong
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 Hong Kong, China; China, Hong Kong; China, Hong Kong