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]: One variant of this phenomenon can be used to tune the electronic properties of boron nitride nanotubes from nearly insulating to metallic. Another variant of this phenomenon is induced by interference of standing laser waves to trap atoms of a Bose-Einstein condensate loaded into an optical lattice. Schrdinger's third article from his 1926 series of papers presented his perturbation theory treatment of this effect's modification of the Balmer and Lyman series. Along with van der Waals broadening and resonance broadening, this effect can produce pressure broadening of spectral lines. In addition to the giant version and the AC or Autler-Townes form of this effect, it exhibits variants that are linear and quadratic in the applied field. FTP name this shifting and splitting of spectral lines due to an external electric field, the analogue of the Zeeman effect.
[EX A]: Science

[EX Q]: Racial violence in this city began with the 1909 lynching of William James, as well as the later 1967 murder of black soldier Robert Hunt. Its Chief of Police was shot in 1969 violence stopped when Governor Richard Ogilvie sent in the National Guard. Rooster Cogburn opened a bar here after the Civil War, and it was the inspiration for Eden in Charles Dickens' Martin Chuzzlewit. Stephen Foster wrote a song about being "way down" in this city, which is where Magnolia Manor and Fort Defiance State Park are located. Huck and Jim intend to go to this city to obtain Jim's freedom in Huckleberry Finn, but they end up sailing past it. This city has the lowest elevation of any within Illinois and is located at the confluence of the Mississippi and Ohio Rivers. For 10 points, name this southernmost city in Illinois, which shares its name with a city in Egypt.
[EX A]: History

[EX Q]: eastern border of this state lies along the Unaka range and the Bald Mountains. The "highland rim" surrounds the "central basin" of this state, and the seat of its Rutherford county is Murfressboro, which saw the battle of the Stones River during the Civil War. Near its border with North Carolina lies Clingman's dome. This state's namesake river begins at the confluence of the French Broad and the Hoiston Rivers, and passes through a city which is home to the Sunsphere. Another city in this state is home to the Grand Ole Opry and is called the "Music City. " For 10 points, identify this state which includes cities such as Chattanooga, Knoxville, and Nashville.
[EX A]:
Social Science