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The smartest thing that Google did was getting smaller advertisers to buy in , '' said Ellen Siminoff , the chief executive of Efficient Frontier , an agency that helps advertisers manage their campaigns on search engines .
 Ellen Siminoff, Efficient Frontier
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; 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} 
Answer:
 Ellen Siminoff, Efficient Frontier