Given the task definition and input, reply with output. 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.

Context: The Upper Millecoquins River is a 7.6-mile-long (12.2 km) river on the Upper Peninsula of Michigan in the United States. It begins at the outlet of Millecoquins Pond in northern Mackinac County and flows generally south to Millecoquins Lake. The outlet of Millecoquins Lake is the Lower Millecoquins River which flows to Lake Michigan.
Question: The document can be classified to which topic?
Options: 1)Animal, 2)NaturalPlace, 3)WrittenWork, 4)Plant, 5)Building
2