33859
A quasi-sonnet appears with the 1st stanza , which is perhaps an allusion/homage to the “ precedents out of beautiful old books ” and the formalism of the eras preceding Yeats .
 Yeats
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Yeats