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 President Bush 's special envoy for Sudan , Andrew S. Natsios , arrived in Khartoum on Friday night to begin meetings with top Sudanese officials . 
 country capital: Sudan, Khartoum
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Sudan, Khartoum 
Answer:
 country capital: Sudan, Khartoum