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Peter A. Diamond , professor of economics at the Massachusetts Institute of Technology and a co-author of a rival plan to shore up Social Security , noted that about two-thirds of people over the age of 65 rely on Social Security for more than half of their income . ''
 Peter A. Diamond, Massachusetts Institute of Technology
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:
 Peter A. Diamond, Massachusetts Institute of Technology