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: Philbertia alba is a species of sea snail a marine gastropod mollusk in the family Turridae.
Question: The document can be classified to which topic? 
Options: 1)Plant, 2)NaturalPlace, 3)EducationalInstitution, 4)Animal, 5)WrittenWork
4

Context: Four Shōjo Stories is a shōjo manga anthology released by Viz Media in February 1996. It contains two stories by Keiko Nishi and one each by Moto Hagio and Shio Satō. This was one of the first (if not the first) shōjo titles released in English in North America.
Question: The document can be classified to which topic? 
Options: 1)Album, 2)EducationalInstitution, 3)Company, 4)WrittenWork, 5)NaturalPlace
4

Context: MV Loch Bhrusda is a Caledonian Maritime Assets Limited ro-ro car ferry operated by Caledonian MacBrayne. After 11 years operating in the Outer Hebrides she is the spare small vessel on the Clyde.
Question: The document can be classified to which topic? 
Options: 1)EducationalInstitution, 2)Village, 3)Plant, 4)MeanOfTransportation, 5)Album

4