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Federal health officials have been trying to increase and diversify the supply of seasonal flu vaccines to avoid a repeat of the shortage in 2004 , when Chiron 's factory in Liverpool , England , was suddenly closed by British regulators because of sanitary problems , depriving the United States of about half its expected supply .
 England, Liverpool
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:
 England, Liverpool