Given the task definition and input, reply with output. In this task, you are given a text which is the body of a document. Your job is to classify the topic of the document into these categories: 1)Company, 2)Educational Institution, 3)Artist, 4)Athlete, 5)Office Holder, 6)Mean of transportation, 7)Building, 8)Natural place, 9)Village, 10)Animal, 11)Plant, 12)Album, 13)Film, 14)Written work. Your output should be the category number. Don't generate anything apart from numbers 1-14.

Text: The Great Hollow Road Stone Arch Bridge (also known as Etna Stone Bridge) is a historic bridge on Great Hollow Road over Mink Brook approximately 100 feet north of the junction with Smith Lane in Hanover New Hampshire. The stone and concrete bridge was built in 1914 by the town. It is 33 feet (10 m) long and 24.5 feet (7.5 m) wide with a road width of 21.5 feet (6.6 m).
7