54556
The mosque is one of at least two in this part of Baghdad still being held by the Mahdi Army , which stormed out of its stronghold of Sadr City last week and attacked dozens of Sunni mosques to avenge the bombing of the Askariya Shrine , a Shiite holy site , on Feb. 22 .
 location contains: Baghdad, Sadr City
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Baghdad, Sadr City 
Answer:
 location contains: Baghdad, Sadr City