33953
Mr. Basayev , nominally the movement 's second in command , has claimed responsibility for the worst terrorist attacks in Russia , including the hostage siege of a school in Beslan in 2004 that ended with the deaths of 331 people .
 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 
Answer:
 location contains: Russia, Beslan