211487
As Uroš was childless and the nobility could not agree on the rightful heir , the Empire was ruled by semi-independent provincial lords , who often were in feuds with each other .
 location: Empire
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Empire 
Answer:
 location: Empire