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The two prosecutions , the only ones undertaken since the law was introduced , have prompted an intense debate about freedom of the press and the efficacy of the legal system in Bulgaria 15 years after the ouster of the Communist leader Todor Zhivkov . ''
 Todor Zhivkov, Bulgaria
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:
 Todor Zhivkov, Bulgaria