The conversation between human and AI assistant.
[|Human|] Identify the figure of speech used in the phrase "An apple a day keeps the doctor away."
[|AI|] The figure of speech used in the phrase "An apple a day keeps the doctor away" is a Proverb. A proverb is a short, simple, and often metaphorical saying that conveys a general truth or a piece of advice based on common sense or practical experience.
[|Human|] 
Identify the figure of speech used in the phrase "An apple a day keeps the doctor away."