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Just two weeks ago -- a day after the United States offered to hold direct talks with Iran over its nuclear program -- North Korea invited Christopher R. Hill , an assistant secretary of state and chief negotiator on the North 's nuclear weapons program , for direct talks in Pyongyang .
 location contains: North Korea, Pyongyang; country of capital: North Korea, Pyongyang; country of administrative divisions: North Korea, Pyongyang; administrative division of country: Pyongyang, North Korea
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:  North Korea, Pyongyang; North Korea, Pyongyang; North Korea, Pyongyang; Pyongyang, North Korea 
Answer:
 location contains: North Korea, Pyongyang; country of capital: North Korea, Pyongyang; country of administrative divisions: North Korea, Pyongyang; administrative division of country: Pyongyang, North Korea