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:  GSF Explorer formerly USNS Hughes Glomar Explorer (T-AG-193) is a deep-sea drillship platform initially built for the United States Central Intelligence Agency Special Activities Division secret operation Project Azorian to recover the sunken Soviet submarine K-129 lost in April 1968.The cultural impact of Glomar Explorer is indicated by its reference in a number of books: The Ghost from the Grand Banks a 1990 science fiction novel by Arthur C.

6