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He subsequently worked at Universidad Nacional del Sur ( 1956 – 1966 ) , in the Venezuela Instituto de Zoología Tropical ( 1967 – 1971 ) , in Fundación Bariloche ( 1971 – 1978 ) , at the Instituto Politécnico Nacional in México ( 1978 – 1983 ) , as a UNESCO expert in 1974 and , finally , at the Universidad Nacional del Comahue in Bariloche .
 Universidad Nacional del Sur, Venezuela Instituto, Bariloche, Instituto Politécnico Nacional, México, UNESCO, Universidad Nacional del Comahue, Bariloche
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Universidad Nacional del Sur, Venezuela Instituto, Bariloche, Instituto Politécnico Nacional, México, UNESCO, Universidad Nacional del Comahue, Bariloche