4787
 In a telephone interview Friday , Robert Glaser , the founder and chief executive of RealNetworks , said the patent was related to an invention that the company first sought protection for in 1994 . 
 Robert Glaser, RealNetworks; RealNetworks, Robert Glaser
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:
 Robert Glaser, RealNetworks; RealNetworks, Robert Glaser