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: 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.

Output: Science

Input: Consider Input: One reactant for this reaction is best prepared by an S N 2 nucleophilic addition of a triphenyl compound, followed by elimination of the hydrogen halide by an organolithium reagent. This reaction itself proceeds through a rather unique intermediate formed when the pi electron from the reagents carbon-oxygen double bond migrates to the positively charged pole of one reactant; this intermediate is called a an oxaphosphetane, from which a triphenyl oxide is eliminated to complete the reaction. The aforementioned positively charged pole is on phosphorous because the aforementioned prepared reactant is a phosphorous ylide. For ten points, name this reaction that produces selectively double-bonded alkenes from aldehydes and phosphorous ylides and that is named for the German 1979 Chemistry Nobel winner.

Output: Science

Input: Consider Input: One story involving this figure has him calling out to the raven and the sea-duck to gather his pearly tears to which only the latter complies and is awarded with glorious plumage. This character is responsible for catching the giant fire-pike and used its jawbone to craft the first kantele. Another event involving this character is his slaying of Otso the Honeyeater with a three-pronged spear while another has this character summoning a dwarf from the seas to chop down a giant oak tree blocking out the sun. This figure is rescued from (*) falling into the sea by a giant eagle after catching and losing a salmon that was actually his music-contest won bride, Aino. This character once created a windstorm to carry his friend from the top of fir tree to the land of Pohyola and then convinced that friend, Ilmarinen to forge the magical Sampo. The only son of the great mother goddess, Ilmatar, FTP, identify this eternal bard' of Finnish folklore, the main hero of the Kalevala.
Output: Social Science