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By May 1st , all of northern Italy was liberated , including Bologna ( April 21 ) , Genoa ( April 23 ) , and Venice ( April 28 ) .
 Bologna, Genoa, Venice
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bologna, Genoa, Venice