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Government officials with knowledge of the allegations say he was referring to John J. Mack , chief executive of Morgan Stanley , who was being considered to run the investment firm at the time and who had previously been chief executive of Credit Suisse First Boston .
 person of company: John J. Mack, Credit Suisse First Boston; person of company: John J. Mack, Morgan Stanley
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:  John J. Mack, Credit Suisse First Boston; John J. Mack, Morgan Stanley 
Answer:
 person of company: John J. Mack, Credit Suisse First Boston; person of company: John J. Mack, Morgan Stanley