56134
Göktürk armies had penetrated the Volga by 549 , ejecting the Avars , who were then forced to flee to the sanctuary of the Hungarian plain .
 location: Volga
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: Volga 
Answer:
 location: Volga