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The fact that no other country has done it is a sign that this would be a momentous and potentially catastrophic step , '' said Harold Hongju Koh , who served in the State Department in the Clinton administration and is dean of Yale Law School . ''
 Harold Hongju Koh, Yale Law School
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:
 Harold Hongju Koh, Yale Law School