Task: Text Categorization
Input (English): Context: Kormilovka (Russian: Кормиловка) is a river in Perm Krai Russia a left tributary of Kungur River which in turn is a tributary of Iren River. The length of the river is 11 km.
Question: The document can be classified to which topic? 
Options: 1)Company, 2)Plant, 3)NaturalPlace, 4)Artist
Output (English): 3