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Philadelphia 's neighborhoods are divided into large sections - Northeast , South , Southwest , West , Northwest , and City Planning Commission - surrounding Center City , which correspond closely with the city 's limits before consolidation in 1854 .
 Philadelphia, Northeast, South, Southwest, West, Northwest, City Planning Commission, Center City
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Philadelphia, Northeast, South, Southwest, West, Northwest, City Planning Commission, Center City