Detailed Instructions: 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.
Problem:Context: The Antonov An-2 (Russian nickname: Annushka or Annie) is a Soviet mass-produced single-engine biplane utility/agricultural aircraft designed and manufactured by the Antonov Design Bureau (now State Company) since 1946. (USAF/DoD reporting name Type 22 NATO reporting name Colt.)
Question: The document can be classified to which topic?
Options: 1)Plant, 2)MeanOfTransportation, 3)NaturalPlace, 4)Athlete
Solution:
2