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But at the end of the process , which attracted interest from Gannett , William Dean Singleton 's MediaNews Group and various private equity groups , only McClatchy made a formal bid : valuing the company at $ 4.5 billion , it would buy Knight Ridder through a combination of cash and stock .
 William Dean Singleton, MediaNews Group
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:
 William Dean Singleton, MediaNews Group