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: When it interacts with ryanodine receptors, this element upregulates its own release, and this compound forms the cell plates of coccolithophores. Stimulation of Gq ("g-sub-q") opens a channel that allows for this ion's movement, and proteins that bind this ion have an EF hand motif. Cellular concentrations of this ion are regulated by IP3. Parafollicular cells of the (*) thyroid produce a compound that reduces the concentration of this ion in blood, and its intestinal absorption requires vitamin D. This ion interacts with Troponin to stimulate muscle contraction, and the lumens of sarcoplasmic reticula have high concentrations of this ion. For 10 points, name this divalent cation that is stored in bones.

Output: Science

Input: Consider Input: One character in this novel, Adele Ratignolle, urges the protagonist to care for her children above all else. Another character in this novel, the piano playing Mademoiselle Reitz helps the protagonist sort of her feelings for another character, who has left Grand Isle for Mexico. Despite being married to her husband Leonce, the protagonist of this novel develops romantic feelings for Alcee Arobin and Robert Lebrun before drowning herself by walking into the Gulf of Mexico. For 10 points, identify this novel about Edna Pontellier by Kate Chopin.

Output: Literature

Input: Consider Input: One of the first songs in this opera contains instructions to grind the wheelstone to let it spatter fire and blood. One of the central characters is begged to reconsider his actions in the aria Un giuramento atroce, while another characters allegiance to the old King of Tartary is explained in the first act by Timur. Three ministers in this opera sing Ola, Peng! while preparing for either a wedding or a funeral, and those characters, Ping, Pang and Pong, later try to discover the name of its male lead. After hearing a command ordering that no one sleep, Calaf sings its aria Nessun Dorma. FTP, name this final, unfinished opera by Puccini, about a namesake Chinese princess.
Output: Fine Arts