Given the task definition and input, reply with output. 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: Olea woodiana known commonly as the Forest olive or black ironwood (Afrikaans: Bosolienhout) is an African tree species belonging to the olive family (Oleaceae).The tree grows in lower altitude hill forests from Kenya Tanzania Swaziland and South Africa.
Question: The document can be classified to which topic?
Options: 1)Plant, 2)Artist, 3)Animal, 4)NaturalPlace, 5)OfficeHolder
1