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In a sign of the resistance he faces within his own bloc , a letter signed by 13 European trade ministers was sent last week to the European Union agriculture commissioner , Mariann Fischer Boel , outlining concerns that concessions by Brussels have not been matched by the United States .
 European Union, Brussels
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:
 European Union, Brussels