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Mausoleum of Galla Placidia in Ravenna , Italy
 Mausoleum of Galla Placidia, Ravenna, Italy
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Mausoleum of Galla Placidia, Ravenna, Italy