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In 1918 he made his debut as an opera singer , under the stage name of Lionello Cecil , performing in the Storchi Theatre of Modena as Duca di Mantova ( Verdi 's Rigoletto ) .
 Lionello Cecil, Modena
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Lionello Cecil, Modena