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In the next few weeks , the board of American University will decide the future of its longtime leader , Benjamin Ladner , who has become the latest college president to be investigated over the nature of his spending .
 Benjamin Ladner, American University
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:
 Benjamin Ladner, American University