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He used to support the governments of Néstor Kirchner and Cristina Fernández de Kirchner , and became critical of them during the 2008 Argentine government conflict with the agricultural sector .
 Néstor Kirchner, Cristina Fernández de Kirchner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Néstor Kirchner, Cristina Fernández de Kirchner