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After the legendary foundation by Romulus , Rome was ruled for a period of 244 years by a monarchical system , initially with sovereigns of Latin and Sabine origin , later by Etruscan kings .
 Romulus, Rome
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Romulus, Rome