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Mounted on a gaudy pink background and hanging prominently on a wall are smiling photographs of President Hosni Mubarak of Egypt ; Gamal Mubarak , his son and likely successor ; and President Bush .
 Hosni Mubarak, Gamal Mubarak
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:
 Hosni Mubarak, Gamal Mubarak