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A7 Russia Accused in Beslan Siege The Chechen rebel leader and mastermind of the siege last year at a school in Beslan said Russia 's special services had helped make the assault possible by allowing the terrorists safe passage toward the school in an attempt to ambush them .
 location contains: Russia, Beslan; location contains: Russia, Beslan
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, Beslan; Russia, Beslan 
Answer:
 location contains: Russia, Beslan; location contains: Russia, Beslan