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:  USNS Charlton (T-AKR-314) is one of Military Sealift Command's nineteen Large Medium-Speed Roll-on/Roll-off Ships and is part of the 33 ships in the Prepositioning Program. She is a Watson-class vehicle cargo ship named for Sergeant Cornelius H. Charlton a Medal of Honor recipient.Laid down on 4 January 1999 and launched on 11 December 1999 Charlton was put into service in the Pacific Ocean on 23 May 2000.

6