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They met in April 1469 ; she was with her parents at the church of San Torpete when she met Marco ; the doge Piero il Fregoso and much of the Genoese nobility were present .
 Piero
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Piero