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In the day 's other surprising news , Walker , a forward , returned to the Boston Celtics two years after Danny Ainge , the team 's executive director of basketball operations , traded him .
 person of company: Danny Ainge, Boston Celtics
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:  Danny Ainge, Boston Celtics 
Answer:
 person of company: Danny Ainge, Boston Celtics