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In 1967-1970 he was on detail to the Agency for International Development with the CORDS program in Vietnam , where he learned Vietnamese .
 organization: Agency for International Development; 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: Agency for International Development, Vietnam 
Answer:
 organization: Agency for International Development; location: Vietnam