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Pol Pot  ( born Saloth Sar ( ) ; 19 May 1925 15 April 1998 ) was a Cambodian Communist revolutionary who led the  Khmer Rouge  from 1963 until his death in 1998 .
 employee of: Pol Pot, Khmer Rouge
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:  Pol Pot, Khmer Rouge 
Answer:
 employee of: Pol Pot, Khmer Rouge