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:  The Marietta Historic District is a historic district in Marietta Ohio United States that is listed on the National Register of Historic Places. Among the buildings in the district are ones dating back to 1788 the year in which Marietta was founded as the first white settlement in what is now Ohio.

7