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: The future Byzantine Emporer Romanus II was at one time betrothed to his niece Hedwig, and his son married Theophano, who was either the daughter of the same Romanus II or the niece of John Tzimices. The son of Henry I, Duke of Saxony, he defeated the Magyars at the Battle of Lech in 955 and was crowned Holy Roman Emperor in 962. For ten points, name this founder of the dynasty that bears his name.

SOLUTION: History

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: After losing a contest to this character, Heracles briefly joined the Thiasus, his retinue. Some stories claim he was the son of Persephone and that, at Heras bidding, the Titans ate all of him but his heart, which Zeus put in the womb of his better-known mother. He is sometimes said to be the father of the Graces with Aphrodite, and he fathered Oenopion with Ariadne. Acoetes, the helmsman, was the only one spared when pirates attempted to sell this god into slavery, and he once drove his cousin Pentheus mad, luring him out into the woods where his Maenads tore him apart. For 10 points, identify this son of Semele, the Greek god of inspired madness and wine.

SOLUTION:
Social Science