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.

[EX Q]: 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.
[EX A]: Science

[EX Q]: This man put forth a theory on the formation of sentences intended to refute Hermann Pauls theory, using the example that, in the sentence Grass is green, our representation of grass contains our representation of green. He was given a typewriter as a gift by his student James Mckeen Cattell; he posited that the mind constructs psychic resultants which are formed by associations or apperceptive combinations. His first publication was Contributions to the Theory of Sense Perception, after which he formulated his theory of introspection, and then wrote Lectures on the Mind of Humans Animals. Another important idea of his is the tridimensional theory of feeling, discovered while employing physiological techniques in his famous laboratory. FTP, name this German-born Father of Experimental Psychology.
[EX A]: Social Science

[EX Q]: Plutarch contrasts this man with Agesilaus II and claims he told defenders of a city "Stop quoting laws to us. We carry swords." His son Sextus held off Octavian and Antony's forces in Sicily until 36 BC. This man received accolades for defeating (*) Mithridates VI. The eunuch Pothinus convinced Ptolemy XIII to behead this man after battles at Dyrrhachium and Pharsalus forced him to flee to Egypt. For 10 points, name this Roman general who fought Julius Caesar in a civil war.
[EX A]:
History