54819
As a request from a group of black leaders , the book ’s content involves the product of an “ intensive study of 609 urban and 185 rural Negro churches widely distributed in twelve cities and four country areas ” ( Pratt 502 ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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