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Aguiã is a freguesia ( " civil parish " ) of Portugal , part of the concelho ( " municipality " ) of Arcos de Valdevez , in the district of Viana do Castelo and the Norte region .
 Portugal, Arcos de Valdevez, Norte
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Portugal, Arcos de Valdevez, Norte