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.

[Q]: One reactant for this reaction is best prepared by an S N 2 nucleophilic addition of a triphenyl compound, followed by elimination of the hydrogen halide by an organolithium reagent. This reaction itself proceeds through a rather unique intermediate formed when the pi electron from the reagents carbon-oxygen double bond migrates to the positively charged pole of one reactant; this intermediate is called a an oxaphosphetane, from which a triphenyl oxide is eliminated to complete the reaction. The aforementioned positively charged pole is on phosphorous because the aforementioned prepared reactant is a phosphorous ylide. For ten points, name this reaction that produces selectively double-bonded alkenes from aldehydes and phosphorous ylides and that is named for the German 1979 Chemistry Nobel winner.
[A]: Science


[Q]: One character in this novel, Adele Ratignolle, urges the protagonist to care for her children above all else. Another character in this novel, the piano playing Mademoiselle Reitz helps the protagonist sort of her feelings for another character, who has left Grand Isle for Mexico. Despite being married to her husband Leonce, the protagonist of this novel develops romantic feelings for Alcee Arobin and Robert Lebrun before drowning herself by walking into the Gulf of Mexico. For 10 points, identify this novel about Edna Pontellier by Kate Chopin.
[A]: Literature


[Q]: The Bohr van Leeuwen theorem states that any plasma with a kinetic equilibrium will reach a state where this phenomenon is zero. Free electron gases display the Landau type of this property, and materials exhibiting it have negative susceptibility. Superconductors display the "perfect" variety of this property in the Meissner Effect. This property is often described as Lenz's Law applied on a microscopic scale, and it was originally though to violate Earnshaw's Theorem. This property is exhibited by pyloric graphite and bismuth, and materials displaying it can be levitated for a few seconds. For 10 points, name this form of magnetism that expels applied magnetic fields.
[A]:
Science