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.

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.
Science

This work contains two barrel vaults with hexagonal coffers, and the artist appears in it staring directly at the viewer. This painting located across from the La Disputa contains statues of Apollo and Athena flanking the central figures. Unknown figures in this painting may be Bramante and (*) Hypatia. Two men in this painting hold globes, while another man writes on a slab of stone and rests his head on his hand. Another figure in this work lies on some stairs with his leg splayed; that man is Diogenes, who appears with people like Pythagoras and Zeno. For 10 points, the philosophers Aristotle and Plato appear in what fresco painted by Raphael
Fine Arts

A red barn can be seen in the back right of this painting, while the main building's attic features a pointed arch window that provides part of the basis for its title. One figure is seen staring at something to the viewer's right, and is based on the artist's sister Nan. Byron McKeeby, the artist's dentist, modeled for the other figure, who is given symbolic significance by holding a pitchfork in his right hand. FTP, what is this classic of American Regionalism, painted by Grant Wood
Fine Arts