15723
 Thanks to multiple accidents of history the uneasy presence of Sunni and Shiite Arab minorities ; an embittered local ethnic group , the Turkmens ; meddlesome neighboring countries with their own restive Kurdish populations ; and , not least , control of about 40 percent of Iraq 's known oil reserves the city of Kirkuk , population about 850,000 , is where all the pieces of Iraqi politics come together , or where they may well fall apart . 
 location contains: Iraq, Kirkuk
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
 Entity Pairs:  Iraq, Kirkuk 
Answer:
 location contains: Iraq, Kirkuk