instruction:
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.
question:
Originally this god was much more malevolent, a god of sorcery who had abducted Xochiquetzal and initiated human sacrifices. Overlord of the constellation Great Bear, he had created the world by tearing apart the primordial crocodile Cipactli, though he lost a foot to her and was thus sometimes called Hurakan. The special protector the god of slaves and punisher of wicked, he saw everything in his magic Obsidian looking glass. FTP name this Aztec god of Magic and the Night Sky, the Lord of the "Smoking Mirror. "
answer:
Social Science


question:
In the aria Mal reggendo, one character in this opera relates how a strange voice stopped his hand from killing his opponent in a duel in Act 1. The arias Di due figli and Abbietta zingara are used by one character to narrate a ghost story to a gathering which is dispersed by the ringing of a bell. In Prima che d'altri vivere, the protagonist bids farewell to his lover after she poisons herself. After the first act in which Ferrando conjures the image of a baby burnt alive on a pyre, Chi del gitano i giorni abbella, or the Anvil Chorus, is sung by a group of gypsies. After the death of Leonora, the mother of Azucena is avenged when Count di Luna orders the execution of the title character Manrico. FTP, name this opera by Giuseppe Verdi.
answer:
Fine Arts


question:
One method of producing this functional group involves an elimination and then expulsion of sulfur dioxide from an alpha-halo sulfone in the Ramberg-Backlund reaction. Also produced form the treatment of tosylhydrazones with strong base in the Bamford-Stevens reaction, this functional group changes positions in the Cope rearrangement. Shrock carbenes and Fischer carbenes catalyze a reaction switching the substituents of two of these compounds, and Lindlar's catalyst is used to produce their cis examples stereoselectively. They are most easily produced in Zaitsev elimination of alkyl halides, and two of them are crossed in a namesake metathesis. For 10 points, name these compounds with formula CnH2n, the simplest example of which is ethylene.
answer:

Science