Definition: In this task, you are given a text which is the body of a document. Your job is to classify the topic of the document into these categories: 1)Company, 2)Educational Institution, 3)Artist, 4)Athlete, 5)Office Holder, 6)Mean of transportation, 7)Building, 8)Natural place, 9)Village, 10)Animal, 11)Plant, 12)Album, 13)Film, 14)Written work. Your output should be the category number. Don't generate anything apart from numbers 1-14.
Input: Text:  The Mangfall Mountains (German: Mangfallgebirge) or sometimes Mangfall Alps are the easternmost part of the Bavarian Prealps that in turn belong to the Northern Limestone Alps. The name comes from the River Mangfall whose tributaries the Rottach Weißach Schlierach and Leitzach drain large parts of the area and form an important drinking water reservoir for the city of Munich.

8