10330
At the time , New York City , San Francisco , Boston , Milwaukee , and Philadelphia had similar provisions to confine butchers to areas in order to keep offal from contaminating the water supply .
 location: New York City; location: San Francisco; location: Boston; location: Milwaukee; location: Philadelphia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: New York City; location: San Francisco; location: Boston; location: Milwaukee; location: Philadelphia