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.

Let me give you an example: Text: The Mansfield Building Society is a UK building society which has its headquarters in Mansfield Nottinghamshire. It is a member of the Building Societies Association.
Question: The document can be classified to which topic? Options: 1)Animal, 2)Plant, 3)Building, 4)Company, 5)WrittenWork
The answer to this example can be: 3
Here is why: Mansfield Building Society is a UK building society. Hence, option 3 is the correct answer

OK. solve this:
Context: The Wedell-Williams Model 44 is a racing aircraft four examples of which were built in the United States in the early 1930s by the Wedell-Williams Air Service Corporation. It began as a rebuilding of the partnership's successful We-Will 1929 racer but soon turned into a completely new racing monoplane aircraft powered by a large radial engine.
Question: The document can be classified to which topic?
Options: 1)OfficeHolder, 2)Athlete, 3)Company, 4)MeanOfTransportation
Answer:
4