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.

Example Input: Coombs tests detect these bodies bound to erythrocytes, and a technique that uses these entities is ELISA. These molecules have a namesake fold, in which two beta sheets are held together by amino acid charges. These adaptable molecules can somatically recombine in a process called V(D)J recombination and are also capable of changing isotype by altering conformation of their heavy chains. Like enzymes, they operate via a a so-called "lock-and-key" mechanism, as verified by Linus Pauling. FTP, name these characteristically y-shaped immune molecules exploited in vaccination and produced by B cells in response to specific antigens.
Example Output: Science

Example Input: Ninhydrin forms a Schiff base with this chemical, resulting in a hue known as Ruhemanns purple. The Birch reduction takes place in a liquid substrate of it, the reason it is common in methamphetamine labs. The Kjeldahl method uses this molecule as an end-product to measure the amount of nitrogen in a sample, and it is oxidized in the first step of a nitric acid forming procedure, the Ostwald process. For 10 points, name this weak base found in fertilizers, formed by combining hydrogen and nitrogen in a three-to-one ratio in the Haber process.
Example Output: Science

Example Input: Notable translators of it include Alexander Heidel, who rendered all the dirty passages into Latin, and John Gardner. The characters include Siduri "whose drinks refresh the soul" and Ninsun the title character's mother, who interprets many of this dreams. Often known by its first line "He who saw everything," in the latter part of the work the hero encounters talking scorpions who allow him to ascend Mount Mashu and a snake who steals the plant of eternal life which Utnapishtam had told him of. Earlier the hero slew Humbaba and the Bull of Heaven with his friend Enkidu. For 10 points - identify this Babylonian poem about a king of Uruk.
Example Output:
Social Science