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The United States military announced Thursday that it had begun a large-scale assault on insurgent bases outside Samarra , a city north of Baghdad where the bombing of a revered Shiite shrine last month sent sectarian violence soaring in Iraq .
 location contains: Iraq, Baghdad; country of capital: Iraq, Baghdad; location contains: Iraq, Samarra
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:  Iraq, Baghdad; Iraq, Baghdad; Iraq, Samarra 
Answer:
 location contains: Iraq, Baghdad; country of capital: Iraq, Baghdad; location contains: Iraq, Samarra