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.
--------
Question: One protein that binds to this protein also binds to proline-rich sequences in the membrane proteins Vasp and Mena, and another is knocked out in the singed mutant. Phosphatidyl-inositol-4,5-bisphosphate regulates the binding of vinculin to both talin and this other protein, whose function is performed by nematode Major Sperm Protein in the only (*) eukaryotic cells known to lack one form of it. In addition to the aforementioned profilin and facsin, severin and gelsolin bind to this protein and sever it. Two toxins often used to study it are cytochalasins and phalloidin. Thymosin 4 sequesters this protein, which undergoes treadmilling because the critical concentration at its (+) and (-) ends is not the same. This protein consists of G monomers which polymerize into F filaments, which make up the microfilaments of the cytoskeleton. For 10 points, name this protein that forms cross-bridges with myosin in muscle cells.

Answer: Science


Question: In one story, a goddess was persuaded by a fox to sleep with this figure, and she subsequently fathered eight gods who could cure eight different body parts. This deity was sometimes known as the "Lord of semen," and in one story his semen caused seven different types of plants to sprout from the earth. This figure asked a sun god to make footprints in the ground so that he could fill them with water, giving life to a barren island called Dilmun. This figure saved humanity by warning Atrahasis of a coming flood and, in another story, the misfortunes of humans were a result of a contest between this figure and Ninhursag. This figure causes a confusion of tongues in a speech to Enmerkar, and he was sometimes represented as half-goat and half-fish. Commonly called the "Lord of Abzu," this figure ruled from the city of Eridu and in one story was seduced by the goddess Inanna. For 10 points, identify this Sumerian deity of knowledge, fertility, and water, who was later identified with the Babylonian Ea.

Answer: Social Science


Question: When Charles Griffes died, he was working on a festival drama based on writings by this author. William Henry Bell titled his C minor symphony with this man's name, which also names an unfinished choral symphony by Granville Bantock. Charles Stanford's Elegiac Ode is based on this man's work, as is George Crumb's song-cycle Apparition  and a 1983 cantata by Ned Rorem. An 1899 overture by Gustav Holst is named for this man, and Holst also based his "Ode to Death" and "The Mystic Trumpeter" on this man's poetry. Such works as Dona Nobis Pacem and the Sea Symphony by Ralph Vaughan Williams are also based on his writing. FTP, name this American poet whose elegy for a president was set to music by Paul Hindemith.

Answer:
Literature


