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:  Luton Castle was a 12th-century castle in the town of Luton in the county of Bedfordshire England (grid reference TL09062082).It was a timber motte-and-bailey structure built in 1139 and demolished in 1154. In 1963 the bailey was exposed but not excavated. An excavation was done in 2002 revealing a steep ditch.The site is now home to Matalan a discount store. Nothing visible remains of the castle.

7