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: One Main Place is a privately owned commercial office building in Downtown Portland in the U.S. state of Oregon. Located at the west end of the Hawthorne Bridge the 20-story skyscraper is 270 feet (82 m) tall. Completed in 1982 it is the fifteenth tallest building in Portland and the sixteenth largest by square-foot. Designed in the modern style by Skidmore Owings and Merrill it is a concrete and glass tower.
Question: The document can be classified to which topic?
Options: 1)Plant, 2)MeanOfTransportation, 3)Film, 4)Company, 5)Building
A:
5