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In a car bomb attack on an Iraqi military garrison on the site of Baghdad 's old Muthana inner-city airfield and another attack at a checkpoint on the perimeter of the heavily secured Baghdad International Airport , two Iraqi soldiers and two security guards were killed .
 Baghdad, Baghdad International Airport
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:
 Baghdad, Baghdad International Airport