2057
Under the Eastern Roman Empire , the town was known as Pegae and was the site of a Byzantine fortress .
 location: Eastern Roman 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: Eastern Roman Empire 
Answer:
 location: Eastern Roman Empire