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: The Piracuruca River is a river of Piauí state in northeastern Brazil.
Question: The document can be classified to which topic? 
Options: 1)Building, 2)Animal, 3)NaturalPlace, 4)OfficeHolder, 5)WrittenWork

Output: 3


Input: Consider Input: Context: The Akaflieg München Mü9 is a tail-less light aircraft that was designed in Germany in 1932.
Question: The document can be classified to which topic? 
Options: 1)WrittenWork, 2)Album, 3)Company, 4)Building, 5)MeanOfTransportation

Output: 5


Input: Consider Input: Context: Westraltrachia inopinata is a species of air-breathing land snails a terrestrial pulmonate gastropod mollusk in the family Camaenidae.This species is endemic to Australia.
Question: The document can be classified to which topic? 
Options: 1)Animal, 2)Artist, 3)Album, 4)NaturalPlace


Output: 1