In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.

Context: Castle to Castle is the English title of the 1957 novel by Louis-Ferdinand Céline titled in French D'un château l'autre. The book features Céline's experiences in exile with the Vichy French government at Sigmaringen Germany towards the end of World War II.For the first U.S. edition translator Ralph Manheim won the 1970 National Book Award in category Translation.
Question: The document can be classified to which topic? 
Options: 1)WrittenWork, 2)Album, 3)MeanOfTransportation, 4)OfficeHolder, 5)Artist
1

Context: The SS City of Johannesburg was a British merchant steamer sunk in the Second World War. She was built by Barclay Curle & Co of Whiteinch Glasgow for Ellerman Lines Ltd of London in 1920 originally being named SS Melford Hall. She was renamed SS City of Johannesburg in 1926 and was homeported in Liverpool.
Question: The document can be classified to which topic? 
Options: 1)Athlete, 2)Company, 3)WrittenWork, 4)Plant, 5)MeanOfTransportation
5

Context: Geothallus is a genus of liverwort in the Sphaerocarpaceae family. It includes only the single species Geothallus tuberosus which is endemic to southern California. Its natural habitat is hot deserts. It is threatened by habitat loss.
Question: The document can be classified to which topic? 
Options: 1)Plant, 2)Building, 3)EducationalInstitution, 4)NaturalPlace, 5)Film

1