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.

Input: Consider Input: Earthworms uniquely use the molecule lombricine to react with this molecule. This molecule activates P2X3 and P2X2/3, two receptors that control pain responses, and in conjunction with luciferin this molecule is responsible for the light of fireflies. In the muscular tissue of chordates, this compound donates a group to creatine. In proteins, this molecule, first synthesized by Alexander Todd, is almost always bound by a magnesium cofactor, and large quantities of this molecule are produced via oxidative phosphorylation in the electron transport chain. For 10 points, name this molecule discovered by Karl Lohmann,, the energy currency of the cell.

Output: Science


Input: Consider Input: Melamine resin is formed by dehydration of this compound, while barbiturates can also be formed by addition of this compound to malonic acid. Other uses of this compound include separation of racemic mixtures. Originally produced by a reaction between silver cyanate with ammonium chloride, it is now made in indusrial quantities by heating carbon dioxide with ammonia. When arginine is split, it forms an ornithine molecule and a molecule of this; the principal end product of mammalian nitrogen metabolism. First isolated by H.M. Rouelle, FTP, name the compound used to disprove the theory of vitalism when, in 1828 Friedrich Wohler, first synthesized it from inorganic materials.

Output: Science


Input: Consider Input: This man wrote about a creature that "launch'd forth filament, filament, filament" in a poem about a "noiseless patient spider." He wrote "Flood-tide below me! I see you face to face!" in his "Crossing Brooklyn Ferry." He published a "deathbed edition" of his continually revised masterpiece, which includes a poem beginning "I celebrate myself, and sing myself." For 10 points, name this American poet who included "Song of Myself" in his Leaves of Grass.


Output: Literature