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 Input:
Rosenheim and Callow developed a test in which a mixture of this compound and metal acetates are used to detect the presence of sterols. Millon's reagent is a solution of mercury in this substance and a similar substance, which turns red in the presence of phenolic compounds and is useful in detecting tyrosine residues. The commercial production of this compound begins with the combustion of ammonia using a platinum-rhodium catalyst; that process is the Ostwald process. For 10 points, identify this acid which is found with hydrochloric acid in aqua regia, and has chemical formula HNO3.

Ex Output:
Science


Ex Input:
Her third husband was a farmer who lost his crops to a horde of fairy mice, but they stopped harassing him after he caught one and threatened to hang it. Before she married Manawydan, she had a child by her second husband who vanished from their home and ended up at the court of Teirnon. The daughter of Hefeydd the Old, this lady of the Singing Birds decided that she preferred a lord of Dyfed to her first husband, Gwawl. Considered a version of the horse goddess Epona, she was the mother of Pryderi by the man she loved, Pwyll. FTP, name this figure from Welsh myth who rings like a bell through the night in a song by Fleetwood Mac.

Ex Output:
Social Science


Ex Input:
In NMR, the nucleus independent chemical shift is used as a reference when working with molecules that exhibit this property. Also in NMR, molecules with this property exhibit a diamagnetic ring current. If half the vertices of a molecule's structure lie fully in the lower half of a Frost circle, it will have this property, which corresponds to no occupation of antibonding molecular orbitals. Molecules with this property generally show a high degree of unsaturation, but prefer substitution reactions to addition reactions. A molecule is said to have this property if it contains a fully-conjugated cyclic system. Four n plus two pi electrons is one criteria for this property put forth by Huckel. For 10 points, name this property of molecules like benzene, which exhibit unusual stability.

Ex Output:

Science