12041
 The Badr group and the Mahdi Army militia loyal to Moktada al-Sadr , a Shiite cleric whose power base is in the Baghdad slum of Sadr City , are believed to have played a leading role in the Shiite death squads that have killed hundreds of Sunnis in revenge for Sunni insurgent attacks on Shiite targets . 
 location contains: Baghdad, Sadr City
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 location contains: Baghdad, Sadr City