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The PRS has seen an acrimonious split in recent years and Pérez Alsina represents the new Kirchnerist leadership which supports the government of President Cristina Fernández de Kirchner .
 Pérez Alsina, 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:
 Pérez Alsina, Cristina Fernández de Kirchner