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In Reflection on Cambodian History Up to the Era of  Democratic Kampuchea   Khieu Samphan  says the Khmer Rouge only wanted what was best for Cambodia .
 Democratic Kampuchea, Khieu Samphan
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:
 Democratic Kampuchea, Khieu Samphan