Q: 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.
Context: Chamchuri Square is a high-rise building complex located in Bangkok Thailand. It consists of a commercial office tower a residential tower and a podium housing a shopping mall which connects the two. Owned by Chulalongkorn University construction on the complex began in 1994 but was halted from 1996 to 2005 and later completed in 2008. With forty floors and a height of 173 metres (568 ft) the office tower is the thirty-eighth-tallest building in Thailand as of 2009.
Question: The document can be classified to which topic?
Options: 1)OfficeHolder, 2)Film, 3)Plant, 4)Building, 5)Village
A:
4