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In the 1920s and 1930s , Mathewson served in a variety of assignments in the United States and overseas , including graduate student in Madrid , Spain , professor of Spanish at the United States Military Academy , instructor at the Fort Sill , Oklahoma Field Artillery School , and special projects officer in Latin America .
 person: Mathewson; location: Madrid , Spain; organization: United States Military Academy; location: Fort Sill; location: Oklahoma; location: Latin America
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: Mathewson, Madrid , Spain, United States Military Academy, Fort Sill, Oklahoma, Latin America 
Answer:
 person: Mathewson; location: Madrid , Spain; organization: United States Military Academy; location: Fort Sill; location: Oklahoma; location: Latin America