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Safir was appointed New York City 's 29th Fire Commissioner of the City of New York by Mayor Rudolph W. Giuliani on January 1 , 1994 and served in that position until he was appointed 39th Police Commissioner of the City of New York by Giuliani on April 15 , 1996 .
 Safir, City of New York, Rudolph W. Giuliani, Police, City of New York, Giuliani
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Safir, City of New York, Rudolph W. Giuliani, Police, City of New York, Giuliani