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.

Example Input: LDA is used to transform propargyl diol into one of these compounds in the Whiting reaction. A useful one of these compounds is synthesized using zinc chloride to combine trimethylsilyl chloride with methoxybutenone. The namesake value of these compounds is expressed as the mass of iodine equivalent to the amount of (*) maleic anhydride reacting with a unit mass of one of these. The cumulated type of these compounds are less stable than other types. Electrophilic addition can result in both 1,2 and 1,4 additions in the conjugated type of these molecules. That type also undergoes a type of reaction that follows the endo addition rule and forms cyclohexenes, the Diels-Alder reaction. For 10 points, name these hydrocarbons that contain two carbon-carbon double bonds.
Example Output: Science

Example Input: Spin foam serves as a model for 4-geometries used to dynamically observe the quantum form of this force. Mossbauer spectroscopy of an iron-57 gamma emitter was used to measure Doppler redshift associated with this force in the Pound-Rebka experiment, and two lead balls were used to construct a torsion balance to measure the magnitude of this force in the Cavendish experiment. Conceptualized by wells in spacetime, for 10 points, identify this weakest fundamental force that causes objects in the air to accelerate to Earth at 9.8 meters per second squared.
Example Output: Science

Example Input: One example of this phenomenon is chiral autocatalysis from apparently racemic solutions, while in another context, this term applies to asynchronous protein cascades involved in coagulation. This concept was defined by Krasnoselski using the theory nonlinear dynamics and nonlinear operators, and the energy lost through this phenomenon is given by the Steinmetz equation. A model of this phenomenon based on monocrystals was devised by Weiss, while a model of it whose building blocks are relay nonlinearities is named after Preisach. A form of this phenomenon results in an example of self-organized criticality known as the Barkhausen effect, and the characteristic loop produced by this phenomenon appears on the graph of magnetization versus magnetic field strength. For ten points, identify this phenomenon in which a material exhibits a "memory," or a time-lagging dependence on applied stress.
Example Output:
Science