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 Adcox Student Prince was a two-seat open-cockpit biplane designed by Basil Smith and built by the students of the US Adcox Aviation Trade School in 1929. It was based on the one-off Adcox Special and the first example flew on 17 September. A single example of a Student Prince X was produced in 1931 powered by a 90hp ACE engine.

6