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Chimamanda Ngozi Adichie 's new novel , '' Half of a Yellow Sun , '' takes place in her native Nigeria during the late 1960 's and early 70 's , when civil war erupted as the eastern state of Biafra attempted to break away and was then forced into submission .
 nationality: Chimamanda Ngozi Adichie, Nigeria
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:  Chimamanda Ngozi Adichie, Nigeria 
Answer:
 nationality: Chimamanda Ngozi Adichie, Nigeria