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.

Example Input: Context: Raven Rocks is spur of Blue Ridge Mountain in Jefferson County West Virginia. The peak is located just north of Jefferson County's border with Clarke County Virginia and west of its border with Loudoun County Virginia. Raven Rocks is formed by the drainage gorges of Rocky Branch Creek to the north and Raven Rocks Creek to the south (both direct tributaries of the Shenandoah River) on the mountains western watershed.
Question: The document can be classified to which topic? 
Options: 1)Artist, 2)MeanOfTransportation, 3)NaturalPlace, 4)Athlete
Example Output: 3

Example Input: Context: German submarine U-81 was a Type VIIC U-boat of the German Navy during World War II.
Question: The document can be classified to which topic? 
Options: 1)OfficeHolder, 2)Film, 3)Artist, 4)Athlete, 5)MeanOfTransportation
Example Output: 5

Example Input: 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
Example Output:
4