Q: 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: Lake Pancharevo ( Pancharevsko ezero or Pancharevo Reservoir) is an artificial lake in western Bulgaria at the end of the Pancharevo Gorge of the Iskar River located at 600 m above sea level between the Vitosha and Lozenska mountains. It is 3 km long and up to 700 m wide reaching a depth of 30 m and is situated 12 km southeast of the capital city of Sofia where the Vitoshka Bistritsa flows into the Iskar.
Question: The document can be classified to which topic?
Options: 1)NaturalPlace, 2)OfficeHolder, 3)Animal, 4)Village
A:
1