60653
The main characteristic of Bulgaria 's topography is four alternating bands of high and low terrain that extend east to west across the country .
 location: Bulgaria
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: Bulgaria 
Answer:
 location: Bulgaria