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Kunming was then known as Yunnan-fu ( 云南府 ) , and François spent time there and elsewhere in Yunnan working on obtaining a concession from the government to build the rail line from Vietnam to Kunming .
 François, Vietnam
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 François, Vietnam