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She also held a research position at Instituto de Investigaciones en Matemáticas Applicadas y en Sistemas , Universidad Nacional Autónoma de México .
 organization: Universidad Nacional Autónoma de México
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: Universidad Nacional Autónoma de México 
Answer:
 organization: Universidad Nacional Autónoma de México