33378
But Blackmun , who sat on the court for 24 years , kept everything from hotel receipts to private exchanges between justices in many of the 3,875 cases in which he participated ; and he sat for 38 hours of videotaped interviews with his former clerk Harold Hongju Koh , now the dean of Yale Law School .
 person of company: Harold Hongju Koh, Yale Law School
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:  Harold Hongju Koh, Yale Law School 
Answer:
 person of company: Harold Hongju Koh, Yale Law School