Definition: In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.
Input: Context: The Maitland River is a river in the Pilbara of Western Australia.The headwaters of the river rise in the Chichester Range near Zebra Hill and it flows in a north-westerly direction. The river crosses the North West Coastal Highway south of Karratha then discharges into the Indian Ocean.
Question: The document can be classified to which topic?
Options: 1)Album, 2)Building, 3)Film, 4)NaturalPlace, 5)Artist
Output:
4