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]: It is not serotonin, but the selective reuptake of this compound is inhibited by tiagabine, and it is converted to succinic acid semi-aldehyde, which is subsequently oxidized to succinic acid in the shunt which produces this compound. One receptor for it forms a heteropentameric complex and in immature neurons, this compound facilitates the outward flux of chloride ions, which is why benzodiazepines are ineffective anticonvulsants in newborns. One receptor for it includes a benzodiazepine binding site, and isoguvacine THIP, and muscimol serve as competitive agonists to this molecule. Synthesized by the decarboxylation of glutamic acid, this neurotransmitter is best known for its role as the chief inhibitory neurotransmitter. For 10 points, identify this neurotransmitter, which is often referred to by its four letter acronym.
[EX A]: Science

[EX Q]: This man used his experiences in Spain to write Tales of the Alhambra and wrote under the pen name "Jonathan Oldstyle." This man's History of New York was written under the pen name of Diedich Knickerbocker. In another of his works, the main character romances Katrina Van Tassel. That character of this author is driven from the title town by (*) Brom Bones, who dresses as the Headless Horseman to terrify Ichabod Crane. For 10 points, name this American author of "Rip van Winkle" and "The Legend of Sleepy Hollow."
[EX A]: Literature

[EX Q]: Features in this province include Split Lake, Playgreen Lake and Cross Lake, which are all connected by the Nelson River. The large plateau of Riding Mountain National park is in its southwestern corner and its highest point is the 2,726-foot high Baldy Mountain, part of this province's namesake escarpment left by Glacial Lake Agassiz. This province receives the Red River of the North and its southeast corner contains a small portion of the Lake of the Woods. Famous for polar bear gatherings at Churchill and bordering Nunavut, Saskatchewan, and Ontario, FTP, name this Canadian province whose cities include Portage la Prairie, Brandon and Winnipeg.
[EX A]:
Social Science