You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

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
Solution: 3
Why? Mansfield Building Society is a UK building society. Hence, option 3 is the correct answer

New input: Context: Le Van Huu (12301322) was an historian of the Tran Dynasty. He is best known for his work the ai Viet su ky the first comprehensive historical record of the history of Vietnam. Although the book was lost during the Fourth Chinese domination in Vietnam its contents including Le Van Huu's comments on various events in the history of Vietnam were used by other Vietnamese historians as a base for their works notably the ai Viet su ky toan thu by Ngo Si Lien.
Question: The document can be classified to which topic?
Options: 1)OfficeHolder, 2)Artist, 3)Building, 4)Village
Solution:
2