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The construction was completed in 1824 and Emperor Minh Mạng named the canal after Châu Vĩnh Tế , the wife of its builder Nguyen Van Thoai .
 Minh Mạng, Châu
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Minh Mạng, Châu