In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

[EX Q]: This man used his experiences in Spain to write Tales of the Alhambra and wrote under the pen name "Jonathan Oldstyle." This man's History of New York was written under the pen name of Diedich Knickerbocker. In another of his works, the main character romances Katrina Van Tassel. That character of this author is driven from the title town by (*) Brom Bones, who dresses as the Headless Horseman to terrify Ichabod Crane. For 10 points, name this American author of "Rip van Winkle" and "The Legend of Sleepy Hollow."
[EX A]: Literature

[EX Q]: The Schlenk equilibrium, which can be affected by the presence of dioxane, describes the stability of these compounds, whose synthesis can be improved by the addition of mercuric chloride amalgamates. They react with nitriles to form intermediate imine anions, and dry carbon dioxide can be bubbled through them to create carboxylic acids, which themselves do not form an addition product with these. In what is sometimes called their namesake's reaction, they act as strong nucleophiles to form tertiary or secondary alcohols from ketones or aldehydes. For 10 points, name these compounds formed by reacting an alkyl halide with magnesium, named for a French guy.
[EX A]: Science

[EX Q]: The application of this process to electron-poor heteroaromatic hydrocarbons yields a Shapiro-type reaction product, and it may be used in stereospecific deuterium labeling. In a potassium decylate system, the addition of crown ethers accelerates the rate of this reaction. A variation of this reaction that gives rise to allylic alcohols is known as the Wharton reaction, while a one-pot variation of this reaction in ethylene glycol is known as the Huang-Minlon modification. Under strongly acidic conditions, its counterpart the Clemmenson reaction proceeds. FTP name this reaction with a hydrazone intermediate which reduces a carbonyl to an alkane by boiling it in a basic solution, named for two chemists.
[EX A]:
Science