Task: Text Categorization
Input (English): 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.
Output (English): 6