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: One member of this phylum, Strongylocentrotus purpuratus, is often used to study developmental processes, and another, Pisaster ochraceus, is an example of a keystone species. Most members of this phylum have pedicellariae that possess three jaws, and some have a chewing apparatus known as Aristotle's lantern. Members of class Asteroidea of this phylum have an ambulacral groove, and the madreporite is the entrance to their water vascular system that includes tube feet. FTP name this phylum whose "spiny skinned" members have radial symmetry and include sand dollars, sea urchins, and sea stars.
Example Output: Social Science

Example Input: A weight of the nth power of this parameter is imputed to contributions to elements of an S matrix by nth-order Feynman diagrams; thus, this number can be considered the order of expansion in perturbative quantum electrodynamics. This constant is a measure of the electron anomalous magnetic moment, which explains its role in the relativistic splitting of atomic spectral lines that is its namesake. The coupling constant for the electromagnetic interactions of electrons, it is equal to the square of the ratio of the electron and Planck charges, or, in cgs units, the electron charge squared divided by the speed of light times Diracs constant. For ten points, name this physical constant usually denoted alpha and equal to about one over one hundred thirty-seven.
Example Output: Science

Example Input: suggests that one organism in this phylum introduced the parasite Haplosporidium nelsoni to the Chesapeake Bay. That organism is Crassostrea gigas. The laterofrontal cirri of the ctenidia in this phylum filter and retain particles. Some organisms in this phylum use byssal threads to attach themselves to a substrate. Filter feeders in this phylum excrete pseudofeces and notably lack a toothed chitinous ribbon. Important features of this phylum include an extension of the body wall which is often responsible for secreting a calcium carbonate shell, the mantle, as well as the radula. For 10 points, name this phylum containing the classes Gastropoda and Bivalvia, examples of which are snails and mussels.
Example Output:
Science

