371888
Leopoldo Marenco ( born at Ceva in 1831 ; died 1899 ) was an Italian dramatic poet , now known as a librettist .
 Leopoldo Marenco, Ceva
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Leopoldo Marenco, Ceva