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 Hamilton Naki , a laborer who became a self-taught surgeon of such skill that Dr. Christiaan N. Barnard chose him to assist in the world 's first human heart transplant in 1967 , but whose contribution was kept secret for three decades because he was a black man in apartheid-era South Africa , died on May 29 at his home in Langa , near Cape Town . 
 country capital: South Africa, Cape Town
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:
 country capital: South Africa, Cape Town