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One of the great problems of populist rhetoric is that they tend to make promises they later can not deliver , '' said Riordan Roett , a Latin America expert at Johns Hopkins University .
 person of company: Riordan Roett, Johns Hopkins University
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:  Riordan Roett, Johns Hopkins University 
Answer:
 person of company: Riordan Roett, Johns Hopkins University