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Although Reagan and other conservatives despised Helsinki for reinforcing the division of Europe , Gaddis shows how it created a new and potent forum for dissidents and critics inside and outside the Soviet Union : '' Begun by the Kremlin in an effort to legitimize Soviet control ... the Helsinki process became instead the basis for legitimizing opposition to Soviet rule . ''
 location contains: Europe, Soviet Union
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:  Europe, Soviet Union 
Answer:
 location contains: Europe, Soviet Union