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At the start of his career , Bloom studied the Romantic and Modernist poets , in particular Percy Bysshe Shelley , W. B. Yeats and Wallace Stevens .
 Bloom, Percy Bysshe Shelley, W. B. Yeats, Wallace Stevens
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bloom, Percy Bysshe Shelley, W. B. Yeats, Wallace Stevens