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Bulwer-Lytton 's literary career began in 1820 with the publication of a book of poems and spanned much of the 19th century .
 Bulwer-Lytton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bulwer-Lytton