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 In a separate presentation , David F. Poltrack , executive vice president for research and planning at the CBS Television Network unit of Viacom , reduced a forecast he made last year for ad spending in 2005 on the four big broadcasters , including CBS . 
 David F. Poltrack, CBS
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 David F. Poltrack, CBS