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 Pastena Caves (Italian: Grotte di Pastena) are a remarkable karst cave system located in the municipality of Pastena in the province of Frosinone Lazio. They are remarkable show caves of Italy and among the most notable ones of the region.

8