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The European Union foreign policy chief , Javier Solana , said Monday in Brussels that an international force would not be '' an easy force to deploy , '' but added that talks were under way about such a force under a United Nations Security Council mandate . ''
 location contains: European Union, Brussels
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: 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} 
 Entity Pairs:  European Union, Brussels 
Answer:
 location contains: European Union, Brussels