6704
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: 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:
 location contains: Baghdad, Sadr City