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.
Q: Context: Martin Winter was the first elected mayor of Doncaster England. He became the first elected mayor of Doncaster in 2002 and successfully defended his position in 2005. Twice elected as the Labour candidate he subsequently left the party and completed his final term as an independent.
Question: The document can be classified to which topic?
Options: 1)Athlete, 2)Plant, 3)Film, 4)Village, 5)OfficeHolder
A:
5