16915
 Mr. Huang implied that China had pressed the United States to deny access to Mr. Chen as the price for its support on curtailing the nuclear programs in Iran and North Korea and addressing the crisis in the Darfur region of Sudan . 
 Darfur, Sudan; Sudan, Darfur
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:
 Darfur, Sudan; Sudan, Darfur