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.

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.
Science

One novel set in this city features "apparat"s that share data about characters like Eunice Park and Lenny Abramov. That novel is Gary Shtyenngart's Super Sad True Love Story. In another novel set here a key found in an envelope prompts a meeting at which William Black is told by Oskar Schell about a voicemail consisting of the repeated phrase "Are you there" In another novel set here Keith Neudecker's estranged wife Lianne repeatedly sees the title street performer. For 10 points, name this setting of Jonathan Safran Foer's Extremely Loud and Incredibly Close and Don DeLillo's Falling Man, both of which center on responses to the 9/11 attacks.
Literature

In this novel, the protagonist commits crimes with Jack Duane and works for the corrupt Mike Scully. Later, he goes to jail after attacking Phil Connor, who had slept with his wife Ona. The end of this novel focuses on a socialist rally whose speaker chants, ""Chicago will be ours! "" The protagonist of this novel is a Lithuanian immigrant named Jurgis Rudkus. And the outcry from this novel was largely responsible for the 1906 Pure Food and Drug Act. For 10 points, name this Upton Sinclair novel known for its graphic depictions of Chicago slaughterhouses.

Literature