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In 1892 , she and her brother Ricardo Palma accompanied their father on a trip to Spain , where he represented Peru at the Ninth International Congress of Americanists .
 Ricardo Palma, Spain, Peru
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ricardo Palma, Spain, Peru