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: Greve Lake (Spanish: Lago Greve) is an ice dammed lake in Chile formed by the advance of Bruggen Glacier. It is fed by several glaciers. Lautaro volcano is located in its vicinity.
Question: The document can be classified to which topic?
Options: 1)Plant, 2)NaturalPlace, 3)WrittenWork, 4)Building, 5)Artist
2