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.

The Clausius-Clapeyron equation assumes the change in this to be zero. Because this quantity is most useful when the substance in question is both isothermal and isobaric, a different quantity is used for explosive substances. An equation partially due to the namesake of this quantity gives the temperature dependence of this quantity for an ideal gas. A zero change in this quantity for a system implies that the system is in equilibrium, but a negative value for this quantity implies that a reaction is spontaneous. One may derive this by utilizing the Legendre transform on the internal energy of a system. For ten points, name this state function named for its American inventor, which measures the maximum amount of work attainable from a system, defined as enthalpy minus the product of temperature and entropy.
Science

poem by this author describes a wall inscribed with the phrase "PARAS THIRTEEN, BOGSIDE NIL" and is an elegy for a man who "drank like a fish" before he was "blown to bits. " He included the image of a "four foot box, a foot for every year" in a poem narrated by a student who "sat all morning in the college sick bay counting bells knelling classes to a close. " This author of "Casualty" wrote of a student of Miss Walls who collects "jampotfulls" of (*) "frogspawn" in another poem. He wrote that "my squat pen rests" "between my finger and my thumb" in a poem that compares his profession to his father's labor in the bogs. For 10 points, name this poet who included "Mid-Term Break" and "Digging" in his collection The Death of a Naturalist, an Irish Nobel winner who translated Beowulf.
Literature

After struggling with Gruffydd ap Llewellyn for two years, he overran Wales with his army. Despite allegiances he had sworn after being shipwrecked, he accepted the witenagemot's election of him as king. He was promptly forced to put down an attempted led by the Norwegian king Hardraada and his own brother Tostig, which he did successfully at Stamford Bridge. However, in less than a month he took an arrow through the eye at Senlac Hill and was dead. FTP, name this man who briefly rules as king of England before he was defeated at Hastings by William the Conqueror's forces.

History