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Zenith will convert its Chihuahua , Mexico , analogue set-top box plant to manufacture the digital boxes .
 Chihuahua, Zenith, Mexico
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Chihuahua, Zenith, Mexico