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The statement added that operations came under the raid to avenge the violation of honor that had been ordered by the leader of  Islamic State of Iraq   Abu Omar al-Baghdadi  the group's chief .
 Islamic State of Iraq, Abu Omar al-Baghdadi
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 Islamic State of Iraq, Abu Omar al-Baghdadi