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Rooted in the story of Emmett Till , the book tells of a black Chicago youth killed by a white man in Mississippi in 1955 .
 place of birth: Emmett Till, Chicago
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:  Emmett Till, Chicago 
Answer:
 place of birth: Emmett Till, Chicago