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.

[Q]: In 1997 Edwin Hall wrote a book about this work which discussed the inclusion of St. Margaret emerging from the belly of a dragon, which can be seen carved above the back of a chair, to argue that Erwin Panofsky's influential interpretations are too simplistic. Commissioned by its subject, a counselor to the Duke of Burgundy who made his money as a silk merchant, the year and the artist's signature can be seen above the mirror whose reflection depicts the artist himself. That artist would go on to paint other famous portraits like The Madonna with the Chancellor Rolin. Filled with details like a lit candle, a little dog, and a pair of discarded clogs, FTP, identify this work that depicts a man dressed in dark heavy wool and a big hat holding the hand of his betrothed, a painting by Jan van Eyck.
[A]: Fine Arts

[Q]: In ferromagnetic materials, a version of this effect occurs in which the resultant resistivity predicted by this effect contains an additional zero-field term proportional to the magnetization. Arranging two solid-state elements which demonstrate this effect at right angles to each other and summing their output voltage to eliminate the noise is a typical way of producing a magnetic field sensor using this effect. This effect is derived by noting that the current crossed with the magnetic field creates a transverse current, which results in a potential difference. For ten points, identify this classical effect in which charge flowing across a transverse magnetic field results in an electric field component orthogonal to both the current and the magnetic field, often used to measure the sign of charge carriers.
[A]: Science

[Q]: The battle of Alcacer Ceguer and the defeat of the Moors at Ceuta bookended his brief military career and he organized the assault on Sala-ben-Sala's forces at Tangier. He was assisted in his most important tasks by the Jew Jehuda Cresques, who lived with him at his estate of Sagres. Zurara is the best source for relations between this man and men such as Gil Eanes, Goncalves Zarco, Dinis Dias, and Nuo Tristao, who sighted the Gambia River. The son of Juan I and Philippa of Lancaster, he sponsored the development of the caravel and quadrant and the exploration of Porto Santo and Madeira. FTP, name this prince of Portugal who, despite never having commanded a ship, was nicknamed "The Navigator. "
[A]:
History