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In 1982 , Vietnam launched a largely unsuccessful offensive against the main Khmer Rouge base at Phnom Malai in the Cardamom Mountains .
 organization: Vietnam; location: Phnom Malai
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Vietnam, Phnom Malai 
Answer:
 organization: Vietnam; location: Phnom Malai