Answer: the year of publication of the article.
The author is Ruth Adams.
The title of the article is Eat Apples
The source is The Journal of Nutrittion, Volume 222, pages 26-32.
Its A, for example when the author mentions a phenix in the book Fahrenheit 451, it is a symbol of the rebirth of ideas that will soon come, not a literal phoenix.
I guess you could say its also like parental genetics except we have our own genes the way you move your hand is different then other peoples hand movement
