Task: Text Categorization
Input (English): Context: The Drag River is a river in the municipalities of Minden Hills and Dysart et al in Haliburton County Southern Ontario Canada. It is in the Great Lakes Basin and is a right tributary of the Burnt River.
Question: The document can be classified to which topic? 
Options: 1)Plant, 2)MeanOfTransportation, 3)Building, 4)NaturalPlace, 5)Athlete
Output (English): 4