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.

Example 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.
Example Output: Science

Example Input: Three of the islands in this group voted for independence in 1975, while Mayotte chose to remain a French dependency. Its first president was Ahmed Abdallah Abderrahman, who was assassinated in 1989. Its highest peak is Karthala, a still-active volcano on the largest island of this group. Other islands include Mwali and Nzwani, which were formerly known as Anjouan and Mohli. Located at the northern end of the Mozambique Channel, FTP, identify this island nation with capital at Moroni.
Example Output: Social Science

Example Input: Resistance to this chemical is highly correlated with polycystic ovary syndrome. A modification of this compound that has undergone a glycine-asparagine substitution and had two arganines added to its B chain is commercially important because it readily hexamerizes and this chemical is stored as an inactive hexamer. This signal molecule is activated by removal of its (*) C peptide component to promote the dephosphorylation of acetyl-CoA carboxylase. When this enzyme binds to its tyrosine kinase receptor, GLUT's are activated to facilitate trans-membrane import of a substance whose export is facilitated by this hormone's agonist, glucagon. For 10 points, name this hormone extracted by Frederick Banting that regulates blood sugar levels.
Example Output:
Science