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.
Input: Context: HMS B1 was the lead boat of the Royal Navy's B class of submarines.She was originally to have been called A14 but was renamed B1 on completion the B class merely being larger and faster versions of the A class with greatly improved underwater range and fitted with Vickers rather than Wolseley petrol engines.She was built at Vickers Barrow-in-Furness and launched on 25 October 1904. She was too primitive to be of much use in World War I and was quickly relegated to training duties.
Question: The document can be classified to which topic?
Options: 1)Athlete, 2)MeanOfTransportation, 3)Album, 4)Film
Output:
2