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.

Input: Consider Input: Japan's Chikyu Hakken is trying to reach this region, and n-waves travel along its upper boundary. Post-perovskite forms in the bottommost part of this region, the D double prime layer. P-waves slow down and S-waves disappear past the bottom of this region, and its top features a P-wave velocity jump from approximately seven to approximately eight kilometers per second. The low velocity zone of the asthenosphere is found in the upper part of this region. It is sandwiched between the Gutenburg discontinuity and the Moho, and this layer's namesake plumes form hotspots. For 10 points, name this layer of the earth between the crust and the core.

Output: Science


Input: Consider Input: The reciprocal relationship between the eigenvalues of the mass matrix of these particles is called the "seesaw mechanism"; the larger eigenvalue may be the mass of their "sterile" variety. One phenomenon predicted by Pontecorvo involving these entities was searched for by (*) MINOS. Reines and Cowan used an aqueous cadmium chloride solution to detect them, and other detectors tend to include large volumes of material, such as Super Kamiokande. For 10 points, name these leptons, the nearly massless products of radioactive decay whose varieties include the muon and tau and which are represented by the letter nu.

Output: Science


Input: Consider Input: One dam on this river is located where the Spokane Hills meet the Big Bend Mountains. Along with Canyon Ferry Dam, Garrison Dam on this river forms Lake Sakakawea. This river is formed by three headwater tributaries which meet near a town in Gallatin County; those tributaries form this river in Three Forks, Montana. Besides the Madison and Jefferson Rivers, other tributaries of this river include the Platte and Yellowstone Rivers. This river flows through the Dakotas before forming part of the border between the namesake state and Kansas. For 10 points, name this river which joins with the Mississippi River near St. Louis.


Output: Social Science