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.

[EX Q]: 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.
[EX A]: Science

[EX Q]: One of his works argues that rationality is the core of all reality, and states that there is no reality besides that which is shaped by the mind; a condensed version of this work can be found in his Encyclopedia of the Philosophical Sciences. One of his works divides the title concept into abstract, moral and ethical spheres, and posits the idea that free will can only be realized in systems of property rights and contracts. In addition to the aforementioned Science of Logic, another work relies on the thesis-antithesis-synthesis method, and includes discussions of Absolute Knowing and the master-slave dialectic. FTP, name this German philosopher and author of The Philosophy of Right and Phenomenology of Mind.
[EX A]: Social Science

[EX Q]: A derivative of phthalic anhydride, this compound was freqently used in laxatives until it was discovered that it might be carcinogenic. It is insoluble in water but soluble in most basic solutions or acetone, and for its primary use is most frequently found in a 1% alcohol solution. For 10 points, identify this crystalline organic compound with formula C20 H14 O4, an indicator which turns red above a pH of 9.6.
[EX A]:
Science