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The surge in violence followed a battle on Tuesday in an apartment building in Dagestan , a third region in the Caucasus , and underscored the lingering instability across Russia 's southwestern territory .
 Dagestan, Russia; Russia, Dagestan; Russia, Dagestan
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:
 Dagestan, Russia; Russia, Dagestan; Russia, Dagestan