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January Tet 1969 refers to the attacks mounted by principally North Vietnamese forces in February 1969 in South Vietnam during the Vietnam War , one year after the original Tet Offensive .
 organization: Vietnamese; location: Vietnam; location: Vietnam
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: Vietnamese, Vietnam, Vietnam 
Answer:
 organization: Vietnamese; location: Vietnam; location: Vietnam