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.

[EX Q]: 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
[EX A]: 4

[EX Q]: Context: MV Isle of Arran is a drive-through ferry owned by Caledonian Maritime Assets Limited and operated on the west coast of Scotland by Caledonian MacBrayne. Built in 1983 she served on the Arran service for ten years before being moved to Kennacraig. With increasing age she has been the winter relief vessel. In 2013 she started a new pilot route from Ardrossan to Campbeltown.
Question: The document can be classified to which topic?
Options: 1)MeanOfTransportation, 2)EducationalInstitution, 3)NaturalPlace, 4)WrittenWork, 5)OfficeHolder
[EX A]: 1

[EX Q]: Context: The Canandaigua Outlet is a main tributary which feeds the Erie Canal and Clyde River in Wayne County New York United States. It begins at Canandaigua Lake in nearby Ontario County and travels approximately 35 miles (56 kilometers) from south to north before emptying into the Erie Canal in the village of Lyons. A number of tributaries feed the Canandaigua Outlet along its route.
Question: The document can be classified to which topic?
Options: 1)Village, 2)Film, 3)Company, 4)NaturalPlace
[EX A]:
4