You will be given a definition of a task first, then some input of the task.
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: The Oak Hook-tip (Watsonalla binaria) is a moth of the family Drepanidae. It is sometimes placed in the genus Watsonalla. It is found in most of Europe except the far north. It is quite common in England and Wales but not found in Scotland and only recently in Ireland.The sexes differ in size (male wingspan about 30 mm female about 35 mm) but are similar in colour.
Question: The document can be classified to which topic?
Options: 1)NaturalPlace, 2)MeanOfTransportation, 3)Animal, 4)OfficeHolder, 5)Athlete
Output:
3