Task: Text Categorization
Input (English): Context: Timsher (Timshor) is a river in Perm Krai Russia right tributary of South Keltma River. It is 235 km in length with drainage basin 2650 km². It starts in northwestern part of Perm Krai in Gaynsky District near the border with Komi Republic. Flows into South Keltma in 15 km from its mouth. There are many swamps and lakes along the river.Main tributaries: Left: Okos Chepets; Right: Myi Bortom.
Question: The document can be classified to which topic? 
Options: 1)Athlete, 2)NaturalPlace, 3)Building, 4)OfficeHolder, 5)EducationalInstitution
Output (English): 2