53519
Only a quarter of the $ 47 billion in the poor countries ' exports to the industrial economies were subject to tariffs in 2003 , the most recent year available , because commodities like oil from Angola and copper from Zaire were exempt .
 Zaire, Angola; Angola, Zaire; Angola, Zaire
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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:
 Zaire, Angola; Angola, Zaire; Angola, Zaire