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Three Sunni election workers were kidnapped while tacking up voting posters in the northern city of Mosul and then killed in front of a crowded mosque on Friday , the latest in a series of violent incidents exposing the rift that has opened up among Iraq 's Sunnis over whether to take part in the coming elections .
 Iraq, Mosul
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:
 Iraq, Mosul