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There was no policy of mass killings he wrote in his new book Reflection on Cambodian History from Ancient Times to the Era of  Democratic Kampuchea  published just days before  his  arrest Monday .
 employee of: Democratic Kampuchea, his
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: 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} 
 Entity Pairs:  Democratic Kampuchea, his 
Answer:
 employee of: Democratic Kampuchea, his