28125
 In recent months , Mr. Mack has had detailed conversations with Laurence D. Fink , the chief executive of BlackRock , the asset management firm , and Philip N. Duff , the head of Frontpoint Partners , a manager of hedge funds . 
 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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
 Entity Pairs:  Laurence D. Fink, BlackRock 
Answer:
 company: Laurence D. Fink, BlackRock