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.

Q: Halogen addition to them creates a mixture of a 1-2 and 1-4 addition product. One preparation of them involves butane undergoing thermal dehydration. Another synthesis of the conjugated variety of this chemical group involves elimination of unsaturated alcohols and alkyl halides. They include a number of useful reagents, including ones named for Chan, Dane, Brassard, Rawal, and Danishefsky. In addition to the conjugated variety, they also occur in isolated and cumulated varieties. Conjugation energy guarantees that the conjugated form is the most stable. For ten points, what is this organic functional group whose 1,3 variety are a principal reactant in the Diels-Alder reaction, and which is characterized by a pair of double bonds.

A: Science
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Q: His death, called providential by Charles Sumner, fell on the same day his home state abolished slavery. After both Louis McLane and William Duane refused to pull the government's funds out of the Second Bank of the United States, the duty fell to this man in his role as Jackson's Secretary of the Treasury. He had earlier been Attorney General, and afterwards was appointed to his most famous position, from which he issued opinions in such cases as Charles River Bridge v. Warren Bridge and Ex parte Merryman. FTP, name this Supreme Court Chief Justice who most famously presided over Dred Scott.

A: History
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Q: This figure was the subject of a murder plot by Giampolo Baglioni, whom he deposed along with Giovanni Bentivoglio. In his early career he was outmaneuvered by Ascanio Sforza and another man, prompting this figure to retaliate by convincing Charles VIII to invade Naples. He called on Duke Federigo to help subjugate Citta di Castello, while one effort to limit the power of this man saw a Synod at (*) Tours dictate that this ruler had no right to launch wars against foreign princes. Convening the Fifth Lateran Council, his best-known achievements occurred after negotiations with Louis XI and Maximillian, leading this successor of Pius III to acquire the territories of Rimini and Faenza from the Republic of Venice after forming the Holy League in the War of the League of Cambrai. FTP, identify this opponent of Alexander VI, the "warrior pope" whose patronage of Bramante, Raphael, and Michelangelo saw the creation of works like the Sistine ceiling.

A:
History
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