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: Norman and Jensen created triangles in which they plot chemical species according to this quantity. In one model of this quantity, electrons distribute to minimize it. Besides the Allred-Rochow definition, Mulliken's original definition of this quantity involved taking the mean of the(*) electron affinity and the first ionization energy. Dissociation energies between two elements are used to calculate the Pauling scale of this quantity, on which fluorine has the highest value. For 10 points, name this property that refers to an atom's ability to attract electrons.
Example Output: Science

Example Input: This battle started after troops under Henry Heth (HEETH) spotted John Buford's cavalry. Key locations in this battle included the Peach Orchard and Devil's Den. One general in this battle, Dan Sickles, disobeyed orders by moving his corps from its location along Cemetery Ridge. That ridge was the object of Pickett's Charge at the end of this battle. George Meade's victory in this battle ended a Confederate invasion of the North. For 10 points, name this battle whose site was later the location of an Address by Abraham Lincoln.
Example Output: History

Example Input: The sun decreases this entity's linking number, called its helicity, in coronal mass ejections. In the presence of this entity, the Lyman alpha transition exhibits ten lines instead of two, and the wave propagation vector is parallel to this entity in Alfven waves. An armature rotates within a stator that generates this phenomenon in a dynamo, and this entity is expelled from a superconductor in the Meissner effect. This quantity is proportional to the integral around a loop of wire of the wire element cross the unit vector to the wire over the distance to the wire squared. For 10 points, give this entity, which exerts a force on a charged particle proportional to velocity's cross product with it.
Example Output:
Science