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.
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Question: One reactant for this reaction is best prepared by an S N 2 nucleophilic addition of a triphenyl compound, followed by elimination of the hydrogen halide by an organolithium reagent. This reaction itself proceeds through a rather unique intermediate formed when the pi electron from the reagents carbon-oxygen double bond migrates to the positively charged pole of one reactant; this intermediate is called a an oxaphosphetane, from which a triphenyl oxide is eliminated to complete the reaction. The aforementioned positively charged pole is on phosphorous because the aforementioned prepared reactant is a phosphorous ylide. For ten points, name this reaction that produces selectively double-bonded alkenes from aldehydes and phosphorous ylides and that is named for the German 1979 Chemistry Nobel winner.

Answer: Science

Question: One major pathway involving this compound is the tuberoinfundibular one that transfers it from the hypothalamus to the pituitary gland. This compound is involved in voluntary motor control via its nigriostriatal pathway, and it binds with lactotrophs in order to inhibit the secretion of prolactin, which is a major antagonist of it. It is the immediate precursor of norepinephrine in the epinephrine synthesis pathway. Antagonists of this neurotransmitter are used to treat schizophrenia, and deficiency of this neurotransmitter can lead to Parkinsons disease. For 10 points, name this neurotransmitter associated with the brain's pleasure center whose precursor is L-dopa.

Answer: Science

Question: Some Catholics celebrate it following mass under the alternate name of Shigmo, and those belonging to the Banjara tribe mark it by a series of specialized dances. Among the legends associated with it are the murder of a woman who possessed poisonous breast milk, the evil Pootana, and the chasing away of the demon Dhundi. It is typically celebrated on the full moon day, or Poornima, in the month of Phalgun and is characterized by consumption of the drink thandai [thun-DYE] laced with bhang [bung], a form of cannabis. It chiefly commemorates the devoutness of Prahlad, the love of Rati and Kami, and the worship of Krishna. FTP, name this Indian spring festival characterized by large bonfires and people throwing colored powders and water on each other.

Answer:
Social Science