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In an interview with CNN Mullen the chairman of the US joint chiefs on staff said  North Korean  leader  Kim Jong-Il  's unpredictability made it difficult to understand the regime's motivations .
 North Korean, Kim Jong-Il
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 North Korean, Kim Jong-Il