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 It is also generally held that if the war did not produce an outright defeat for China , it was a costly mistake fought for dubious purposes , high among them punishing Vietnam for overthrowing the Khmer Rouge leader of Cambodia , Pol Pot , a Chinese ally who was one of the 20th century 's bloodiest tyrants . 
 nationality: Pol Pot, Cambodia; place of death: Pol Pot, Cambodia
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
 Entity Pairs:  Pol Pot, Cambodia; Pol Pot, Cambodia 
Answer:
 nationality: Pol Pot, Cambodia; place of death: Pol Pot, Cambodia