50077
The town lies on the Abens river , a tributary of the Danube , around eight kilometres from the river 's source .
 location: Abens; location: Danube
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Abens, Danube 
Answer:
 location: Abens; location: Danube