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Owned by Sprint Nextel and Sir Richard Branson 's Virgin Group , Virgin Mobile has attracted more than 3.5 million subscribers in the United States since 2002 .
 person of company: Richard Branson, Virgin Group; company founders: Virgin Group, Richard Branson
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: 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} 
 Entity Pairs:  Richard Branson, Virgin Group; Virgin Group, Richard Branson 
Answer:
 person of company: Richard Branson, Virgin Group; company founders: Virgin Group, Richard Branson