Instructions: 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.
Input: Context: The grass genus Aristida is distinguished by having three awns (bristles) on each lemma of each floret. The genus includes about 300 species found worldwide often in arid warm regions. This genus is among those colloquially called three-awns wiregrasses speargrasses and needlegrasses.Aristida stems are ascending to erect with both basal and cauline leaves. The leaves may be flat or inrolled and the basal leaves may be tufted.
Question: The document can be classified to which topic?
Options: 1)WrittenWork, 2)Film, 3)Plant, 4)OfficeHolder
Output:
3