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.

Input: Consider Input: The Schlenk equilibrium, which can be affected by the presence of dioxane, describes the stability of these compounds, whose synthesis can be improved by the addition of mercuric chloride amalgamates. They react with nitriles to form intermediate imine anions, and dry carbon dioxide can be bubbled through them to create carboxylic acids, which themselves do not form an addition product with these. In what is sometimes called their namesake's reaction, they act as strong nucleophiles to form tertiary or secondary alcohols from ketones or aldehydes. For 10 points, name these compounds formed by reacting an alkyl halide with magnesium, named for a French guy.

Output: Science


Input: Consider Input: Imetelstat, a potential new cancer therapy agent, works by targeting the enzyme that repairs these   structures. Blackburn, Greider, and Szostak received the 2009 Nobel Prize for determining the role of  these structures, which typically adopt a G-quadruplex shape. The shortening of these structures   explains the Hayflick limit to cell division and is the basis for the cellular theory of aging, and that  shortening of these structures can lead to cell senescence or apoptosis. Consisting of thousands of  TTAGGG repeats in humans, name these end sequences of chromosomes that prevent genes from  being lost during DNA replication.

Output: Science


Input: Consider Input: According to the Nemesis hypothesis most of its contents would be swept out. The two most accepted models of its origin, the Safronov and Cameron ones, were both offered in the 1970s well after its proposal in 1950. Its hypothesis was based on two observations: first, the inclinations of LPC's show a random distribution, and second, a histogram plot of the aphelia [APP-heel-ya] of observed LPC's shows peaks at 10,000 AU and 50,000 AU. FTP, name this area in the outer reaches of the solar system that is the source of long period comets as hypothesized by its namesake Dutch astronomer.


Output: Science