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BlackRock 's Chief on Calibrating the Risk Factor Laurence D. Fink , chief executive of BlackRock , attributes his success to the idea that a portfolio of assets scrubbed well enough for risk can appeal to both sophisticated institutions who seek high returns as well as more risk-averse retail investors .
 person of company: Laurence D. Fink, BlackRock; person of company: Laurence D. Fink, BlackRock
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:  Laurence D. Fink, BlackRock; Laurence D. Fink, BlackRock 
Answer:
 person of company: Laurence D. Fink, BlackRock; person of company: Laurence D. Fink, BlackRock