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.

Q: 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.

A: Science
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Q: He stepped down as president of his country in 1985, but continued as head of the ruling party until 1990. His government emphasized a form of rural socialism known as ujamaa, and, in 1978, troops under his leadership entered Uganda, deposing Idi Amin. After his retirement he remained active in African politics, and was known throughout the continent as Mwalimu, Swahili for teacher. FTP, identify this first president of Tanzania, who died in October, 1999.

A: History
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Q: This thinker tackled the "Plato's Beard" problem in one of his works, in which he refutes the fictional philosopher McX who claims that Pegasus exists. He argued that not just individual statements, but entire fields, are verified in his "holism." He is the first namesake of an "indispensability argument" for mathematical realism. This man analyzed how the word "gavagai" corresponds to seeing a rabbit run in different cultural contexts and under linguistic barriers, which he termed (*) "indeterminacy of translation." In his magnum opus, he attacked reductionism and the distinction between analytic and synthetic statements. For 10 points, name this American author of Ontological Relativity, Word and Object, and "Two Dogmas of Empiricism."

A:
Social Science
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