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: Lin and Shu proposed the density-wave theory to explain how the structure of these entities is sustained. The most accurate method for measuring the distances to distant ones uses a relation between their maximum rotational velocity and absolute magnitude, which is known as the Tully-Fisher method. They are generally blue because of their high content of old stars, and one type of them features arms that emanate from each end of a namesake structure. They have discs like the lenticular type, but contain much more angular momentum than the elliptical type. FTP name these galaxies, some of which are barred, including the Milky Way.

Output: Science

Input: Consider Input: In 2007, this city began a controversial underground rail project called the Crossrail. In 2009, its mayor, Boris Johnson, saved a woman from a mugging while biking to work. In 2005, this city was rocked by a series of coordinated terrorist attacks on July 7. This city is in the process of constructing an Aquatics Centre, a Velopark (VELL-oh-park), and a Handball Arena as it is hosting the 2012 Summer Olympics. For 10 points, name this capital of the United Kingdom.

Output: Fine Arts

Input: Consider Input: The Mayan prefix ""ox"" or ""ux,"" as in the place-name ""Uxmal,"" means this in English. A defining feature of Semitic languages is that every word is formed from this number of consonantal roots. In German and Latin, this is the number of grammatical genders. In Mandarin and in Japanese, this number is ""san. "" American legal writing preserves an outdated term for quantities that have been multiplied by this number, ""trebled. "" For 10 points, give this number, which in Portuguese and Spanish is ""tres. ""
Output: Social Science