31
 The request for the tests came from investigators in Germany who are trying to learn how a Russian businessman came to leave traces of the radioactive material , polonium 210 , at sites around Hamburg in the days before he flew to London and met Mr. Litvinenko on Nov. 1 . 
 Hamburg, Germany; Germany, Hamburg
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:
 Hamburg, Germany; Germany, Hamburg