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.

Example Input: 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.
Example Output: Science

Example Input: Coombs tests detect these bodies bound to erythrocytes, and a technique that uses these entities is ELISA. These molecules have a namesake fold, in which two beta sheets are held together by amino acid charges. These adaptable molecules can somatically recombine in a process called V(D)J recombination and are also capable of changing isotype by altering conformation of their heavy chains. Like enzymes, they operate via a a so-called "lock-and-key" mechanism, as verified by Linus Pauling. FTP, name these characteristically y-shaped immune molecules exploited in vaccination and produced by B cells in response to specific antigens.
Example Output: Science

Example Input: class of particles is not massless because they are pseudo-Goldstone bosons resulting from chiral symmetry being spontaneously broken. Many grand unification theories require protons to decay into a positron and the neutral form of this class of particles. The negative form of this usually decays into an muon and an anti-muon neutrino. It was wrongly predicted to be the carrier of the strong force by Yukawa. The neutral form of this type of particle can decay into a photon and an electron-positron pair in the Dalitz decay, though more commonly decays into just two photons. While the neutral form of this with zero spin weighs around 135MeV, the positive form of this is made of an up and a down antiquark. For 10 points, name these lightest mesons.
Example Output:
Science