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The Spanish Socialist Workers ' Party ( PSOE ) won the elections winning exactly half the seats and the Corts in turn elected the socialist Santiago Marraco as the first democratically elected President of Aragon .
 Spanish Socialist Workers ' Party, Aragon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Spanish Socialist Workers ' Party, Aragon