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: The Purdy Bridge is a continuous hollow-box girder bridge that spans 550 feet (170 m) (with a central span of 190 feet (58 m)) over Henderson Bay connecting Purdy Washington USA with the Purdy Sand Spit Park. It was built on September 29 1937 and at the time was the longest continuous box girder bridge in the US at a cost of $62000 from a design by Homer M. Hadley.
Question: The document can be classified to which topic?
Options: 1)NaturalPlace, 2)Village, 3)Building, 4)Plant, 5)WrittenWork
A:
3