Definition: 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.
Input: Text:  Sturgeon River is a 106-mile-long (171 km) river in Baraga County and Houghton counties in the U.S. state of Michigan. 25.0 miles (40.2 km) of the river were added to the National Wild and Scenic Rivers System in 1992.

8