637
North Korea has boycotted the talks in recent months after the United States cracked down on financial institutions that dealt with the government in Pyongyang , and with North Korean companies suspected of counterfeiting American dollars and laundering money .
 North Korea, Pyongyang; Pyongyang, North Korea; North Korea, Pyongyang; North Korea, Pyongyang
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 North Korea, Pyongyang; Pyongyang, North Korea; North Korea, Pyongyang; North Korea, Pyongyang