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.

[EX Q]: Lindstrom's theorem states that first-order logic is the strongest logic having both this property and satisfying the Lowenheim-Skolem property. A method for finding a Hausdorff space with this property containing a given space is named for Stone and Cech. Equicontinuity is the main condition for determining whether a family of functions has this property by the Arzela-Ascoli theorem. Using the axiom of choice, it can be shown that an arbitrary product of spaces with this property has this property, a result known as Tychonoff's theorem. In Euclidean space, being closed and bounded is sufficient to show, according to the Heine-Borel theorem, that a set has this property. For 10 points, identify this property which holds of a set on which every open cover has a finite subcover.
[EX A]: Science

[EX Q]: A virtuoso violinist from this country composed a series of Gypsy Melodies for Violin and Piano titled Zigeunerweisen and also authored a Fantasy on Carmen. One nationalist composer from this country created the operas Follet and Liliana early in the 20th century and another one about a man who returns from Algeria that's often compared to Cavalleria rusticana. Another work from this country features a second movement that has a melody introduced by English horn. One of the most famous composers from here composed a ballet featuring the "Dance of the Miller's Wife". The songs "The Pan Piper" and "Will O' the Wisp" appear on a jazz album titled for this place by Miles Davis. The birthplace of the composer of The Three-Cornered Hat, for 10 points, name this country home to the composer of Concierto de Aranjuez and Manuel de Falla.
[EX A]: Fine Arts

[EX Q]: In a fetus, ghrelin is produced more in this organ than in the stomach, which is reversed in full-grown organisms. One bulge on this organ's surface is called the omental tuber, while some people have a second duct in this organ, known as the duct of Santorini. A lack of this organ's namesake polypeptide is linked to obesity in rats. This organ produces trypsinogen, the zymogen form of trypsin. One type of cell in this organ is stimulated by cholecystokinin and secretin. This organ's duct of Wirsung meets the bile duct at the ampulla of Vater, and transports enzymes produced by its acinar cells to the duodenum. For 10 points, name this organ whose islets of Langerhans secrete glucagon and insulin.
[EX A]:
Science