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NBC also announced the promotion of Beth Comstock , a former chief of corporate communications for NBC , who went on to become the chief marketing officer for G.E. Ms. Comstock was named president of digital media and market development for NBC .
 Beth Comstock, NBC; Beth Comstock, NBC; Beth Comstock, NBC
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:
 Beth Comstock, NBC; Beth Comstock, NBC; Beth Comstock, NBC