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Edward B. Marrinan , head investment-grade strategist at J.P. Morgan , said another factor weighing on corporate bonds recently was bad news at other big companies , including the ouster of the chief executive of American International Group , Maurice R. Greenberg , and the downgrading of Liberty Media to junk bond status by Fitch Ratings . ''
 company shareholder among major shareholders: Maurice R. Greenberg, American International Group; company major shareholders: American International Group, Maurice R. Greenberg
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:  Maurice R. Greenberg, American International Group; American International Group, Maurice R. Greenberg 
Answer:
 company shareholder among major shareholders: Maurice R. Greenberg, American International Group; company major shareholders: American International Group, Maurice R. Greenberg