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: revolt in this city was caused by the working class Cabochiens. Abbo Cernuus provides the only account of the siege of this city in 885, which saw the appearance of Rollo, who later became Robert I of Normandy, command the besieging forces. This Western European city contains a building built to house the Crown of Thorns bought from the Byzantines. In addition to La Sainte-Chapelle, this city saw the Day of the Barricades, forcing Henry III out of this (*) Catholic city. It was extensively renovated under Baron Haussmann. and besieged during the Franco-Prussian War. For 10 points, name this city, the home of the Louvre and capital of France.

SOLUTION: History

PROBLEM: The electron dipole moment of this particle is at most three times ten to the negative 26th, and would violate CPT-symmetry if it is non-zero. This particle has a half-life of 881 seconds, and can break up into a proton, an electron and an electron antineutrino via beta decay. This particle is composed of one (*) up and two down quarks, and nuclear fission is initiated by the bombardment of this particle. The number of this particle dictates what isotope an atom is, and they have mass roughly equal to that of a proton. James Chadwick discovered, for ten points, what particle found in the nucleus, which, as its name suggests, has a net charge of zero

SOLUTION: Science

PROBLEM: Britzinger showed that chiral ansa-indenyl ligands can help direct the action of these compounds, and these compounds use MgCl2 or SiO2 as a support. Using vanadium instead of the usual central atom reverses the stereochemistry of the product, and metallocenes are sometimes used to improve control of the product distribution. The less-accepted Green-Mooney mechanism for their operation has a hydride shift, while a competing theory has a substrate occupy a vacant site in the coordination sphere of the central metal atom, followed by a migration. This results in repeated 1,2-insertions and is known as the Cosee-Arleman mechanism, which produces either iso or syndiotactic products. Usually terminating via beta-hydride elimination, for 10 points, name these aluminum and titanium chloride compounds used to create polyethylenes, a type of catalyst named for two chemists.

SOLUTION:
Science