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Then in 1984 , when Sumner Redstone bought out the remaining shares held by Michael Redstone and Michael 's sister , he did so at a depressed price , and had a conflict of interest because he was a trustee for the National Amusements trusts as well as chief executive of National Amusements .
 National Amusements, Michael Redstone; Sumner Redstone, National Amusements; National Amusements, Michael Redstone; Michael Redstone, Sumner Redstone; Sumner Redstone, National Amusements
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:
 National Amusements, Michael Redstone; Sumner Redstone, National Amusements; National Amusements, Michael Redstone; Michael Redstone, Sumner Redstone; Sumner Redstone, National Amusements