Detailed Instructions: In this task, you are given a context paragraph, a question based on that and corresponding answer of a question. Your task is to generate supporting fact/knowledge from context paragraph which helps in answering a given question.
Q: Theophrastus's Enquiry into Plants or Historia Plantarum (Greek: Περὶ φυτῶν ἱστορία , "Peri phyton historia") was, along with his mentor Aristotle's "History of Animals", Pliny the Elder's "Natural History" and Dioscorides's "De Materia Medica", one of the most important books of natural history written in ancient times, and like them it was influential in the Renaissance. Theophrastus looks at plant structure, reproduction and growth; the varieties of plant around the world; wood; wild and cultivated plants; and their uses. Book 9 in particular, on the medicinal uses of plants, is one of the first herbals, describing juices, gums and resins extracted from plants, and how to gather them. Question: What year did the mentor of the person who wrote "Historia Plantarum" die? Answer: 322 BC
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Theophrastuss Enquiry into Plants or Historia Plantarum Greek: Περὶ φυτῶν ἱστορία , Peri phyton historia was, along with his mentor Aristotles History of Animals, Pliny the Elders Natural History and Dioscoridess De Materia Medica, one of the most important books of natural history written in ancient times, and like them it was influential in the Renaissance.