Task: Text Categorization
Input (English): Context: The Manuherikia River is located in Otago in the South Island of New Zealand. It rises in the far north of the Maniototo with the West Branch draining the eastern side of the St Bathans Range and the East Branch draining the western flanks of the Hawkdun Range. The river continues southwest through the wide Manuherikia Valley to its confluence with the Clutha River at Alexandra.
Question: The document can be classified to which topic? 
Options: 1)Plant, 2)EducationalInstitution, 3)Athlete, 4)NaturalPlace, 5)Film
Output (English): 4