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.
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Question: 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.

Answer: Fine Arts


Question: A version of spectroscopy that is free of one form of this effect uses a standing wave to give radiation to a moving atom and is named for its two-photon transition. Due to this effect, atoms observe laser resonance leading to the phenomenon of optical molasses at its namesake cooling limit. Mossbauer spectroscopy uses this effect to modulate the energy of the incident gamma rays. An experiment that used a canal ray tube and a mirror to view light emissions was used to detect the transverse form of this effect, while its relativistic form involves changes equal to the square root of one plus beta over one minus beta. For 10 points, name this shift in the wavelength from a moving source that can be heard by an observer.

Answer: Science


Question: Fergus Mac Roich owned one named Caladbolg, which was used to destroy three hills while fighting against Conchobar Mac Nessa. In Norse mythology, a cursed one called Tyrfing was created by Dvalin and Durin, and the river Gjoll contains several of these objects. The fragments of another one were eaten by Amaterasu in a contest with Susanowoo, who extracted another one from the severed neck of Orochi. In Greek legend, after switching places with Dionysius II for a day, Damocles saw one hanging from a thread in front of him. FTP, name this type of weapon, examples of which include the aforementioned Kusanagi, Beowolfs Hrunting, Rolands Durandal, and King Arthurs Excalibur.

Answer:
Social Science