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: Bonarda Piemontese now officially listed simply as Bonarda but also known as Bonarda di Chieri and Bonarda del Monferrato is a red Italian wine grape variety that is grown in the northwestern region of Piedmont. Prior to the phylloxera epidemic of the 19th century Bonarda was speculated to have accounted for 30% of the plantings in Piedmont but today is only found in scattered plantings along the left bank of the Tanaro river near Govone.
Question: The document can be classified to which topic?
Options: 1)Company, 2)NaturalPlace, 3)Village, 4)Plant
4