27781
History In response to the yellow fever epidemic and in an attempt to revitalize Memphis , the city 's leaders decided to improve the city 's infrastructure , including improving sewer systems , creating public utilities , and creating a system of parks connected by a system of boulevards .
 Memphis
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Memphis