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.

Input: Consider Input: Context: Lautenbach (Ablach) is a river of Baden-Württemberg Germany.
Question: The document can be classified to which topic? 
Options: 1)MeanOfTransportation, 2)Film, 3)WrittenWork, 4)NaturalPlace, 5)Company

Output: 4


Input: Consider Input: Context: Chionanthus callophylloides grows as a tree up to 13 metres (40 ft) tall with a trunk diameter of up to 25 centimetres (10 in). The bark is brown. Fruit is blue green ellipsoid up to 3 centimetres (1 in) long. Habitat is lowland mixed dipterocarp forest sometimes in swamps. C. callophylloides is endemic to Malaysian Borneo (Sabah and Sarawak).
Question: The document can be classified to which topic? 
Options: 1)OfficeHolder, 2)NaturalPlace, 3)Animal, 4)Plant, 5)WrittenWork

Output: 4


Input: Consider Input: Context: Qionglai Mountains (simplified Chinese: 邛崃山; traditional Chinese: 邛崍山; pinyin: Qióng	lái Shān) is a mountain range in the Sichuan Province of China. It runs in the general north-south direction and is located mostly within the Ngawa Tibetan and Qiang Autonomous Prefecture in the north-central part of the province. The Qionglai Range separates the basins of two major rivers of Sichuan: the Dadu River (to the west) and the Min River (to the east).
Question: The document can be classified to which topic? 
Options: 1)EducationalInstitution, 2)NaturalPlace, 3)MeanOfTransportation, 4)Artist, 5)Animal


Output: 2