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During a visit to the 20th infantry division based in Volgograd , he reminded reporters that 90 percent of South Ossetians are citizens of Russia .
 location contains: Russia, Volgograd
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:  Russia, Volgograd 
Answer:
 location contains: Russia, Volgograd