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Later , 30,000 French " colons " from Cambodia were displaced after being expelled by the 1975 - 1979 Khmer Rouge regime under Pol Pot .
 location: Cambodia; organization: Khmer Rouge; person: Pol Pot
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Cambodia; organization: Khmer Rouge; person: Pol Pot