TASK DEFINITION: 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.
PROBLEM: 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.

SOLUTION: Science

PROBLEM: This mythological figure died when a piece of a boat fell on him while he was sleeping. While on the island of Lemnos, this man fathered twin sons with Hypsipyle. Although not Cadmus, this man sowed a field with dragon's teeth as part of a series of tasks. Those tasks were given to him by King Aeetes, who ruled the island of Colchis. This man's uncle Pelias recognized him from his single sandal, and sent him on a mission where had gained the assistance of a sorceress. This man married Medea during a quest in which he searched for the golden fleece. For 10 points, name this hero, the leader of the Argonauts.

SOLUTION: Social Science

PROBLEM: title character was first introduced to English-speakers by the efforts of Thomas Shelton. He concludes that the modern world is all "machinations and schemes" after he falls out of a boat that strikes a floating mill. This character's books are burned by a priest and Nicholas the Barber. He confuses a barber's washbin for the Golden Helmet of Mambrino. A character dresses as the Knight of the White Moon to convince this owner of the horse Rocinante to abandon his quest, which is fueled by his thought that Dulcinea is a princess. For 10 points, name this companion of Sanco Panza created by Miguel de Cervantes.

SOLUTION:
Literature