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.

In the Corey-Bakshi-Shibata catalyst, an atom of it is attached to a pyrrole ring, an oxygen atom, and a toluene group. This element's acids are combined with amines and ketones in the Petasis reaction and in combining alkyl halides through the Suzuki coupling. Complexes containing it are called sido or arachno according to Wade's rules, and a more famous reaction using it is sometimes named for Herbert Brown. Mined from the ore Uletite, its silicate was once used in making hard glass for manufacturing laboratory equipment. For 10 points, name this element that participates in an anti-markonikov addition reaction to alkenes, with atomic number 5 and symbol B.
Science

In this work, a definition of justice as "what is good for the stronger" is given by Thrasymachus. In this work, a story about the killer of King Candaules of Lydia is used to describe how people are just out of necessity. That story in this work tells of the [*] "Ring of Gyges." This work describes chained prisoners who watch shadows pass before them. This work combines ideas about the "divided line" and the sun into its "Allegory of the Cave." For 10 points, name this work that proposes a government ruled by philosopher kings, a dialogue on government by Plato.
Literature

Their proposed coup was inspired by the example of the Carbonari and Tugendbund. Most of the participants were Army veterans, Freemasons, or members of secret societies such as the Union of Salvation. They demanded the accession of Constantine, but they were quickly suppressed and Nicholas I became tsar. FTP name this 1825 event in Russian history.

History