11550
 The U.S. , Russia and Europe are trying to find their way to common ground on the road to the summit , '' said Daniel Yergin , president of Cambridge Energy Research Associates , who talked with Russian and European officials in Europe last week . 
 Europe, Russia
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:
 Europe, Russia