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 Convair XF-92 (originally designated XP-92) was an early American delta-wing aircraft. Originally conceived as a point-defense interceptor the design was later used purely for experimental purposes. However it led Convair to use the delta-wing on a number of designs including the F-102 Delta Dagger F-106 Delta Dart B-58 Hustler the US Navy's F2Y Sea Dart as well as the VTOL FY Pogo.

6