Task: Text Categorization
Input (English): Context: The Gletscher Ducan (also known as Ducan Dador) is a mountain of the Albula Alps located in Graubünden Switzerland. On its northern side lies a glacier named Ducangletscher. It lies south-west of the Hoch Ducan.
Question: The document can be classified to which topic? 
Options: 1)Athlete, 2)Artist, 3)EducationalInstitution, 4)NaturalPlace, 5)OfficeHolder
Output (English): 4