13334
 Elsewhere , the American military reported Sunday night that gunmen killed a United States soldier north of Baghdad about 6:45 p.m. Residents of Sadr City , home base of Mr. Sadr 's powerful Mahdi Army militia , said that American troops backed by armor rolled through portions of the northern Baghdad district on Sunday but that by early evening the area appeared relatively calm . 
 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