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May The Battle of Hamburger Hill was a battle of the Vietnam War which was fought between the United States and South Vietnam against North Vietnamese forces from May 10 – 20 , 1969 .
 location: Vietnam; location: South Vietnam; organization: Vietnamese
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, South Vietnam, Vietnamese 
Answer:
 location: Vietnam; location: South Vietnam; organization: Vietnamese