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.

In a Gustave Caillebotte painting named for one of these objects, a dog walks by a man who holds his\n head in his hands. Silvano Vinceti claimed that the numbers two and seven were hidden in one of these\n objects in the background of the Mona Lisa. The title fireworks show of James Whistler's Nocturne in\n Black and Gold takes place over one of these objects. One of these objects named "Maidenhead" is thought\n to have inspired the one J.M.W. Turner painted in Rain, Steam and Speed. A Japanese inspired structure of\n this type at Giverny was often painted alongside water lilies by Claude Monet. For 10 points, name these\n structures which Canaletto often painted crossing the canals of Venice.
Fine Arts

In topological insulators, one version of this effect gives rise to a defect-resistant current induced by spin-orbit coupling. In graphene, this effect is shifted by one half, giving rise to an anomalous minimum of the relevant quantity, which can allow for ballistic transport. A more complex version of it was discovered in gallium arsenide and can be explained by Laughlin quasiparticles; this is referred to as the fractional version. This effect can be understood in terms of partial filling of Landau levels and has characteristic "plateaus", and it yields numbers called filling factors. Discovered by Klaus von Klitzing when studying a two-dimensional electron gas, for 10 points, identify this effect in which conductivity in a strong magnetic field is quantized.
Science

His final ruling stint came after his victory near Mount Hymettus. He extended influence by recovering Sigeum, thereby controlling the Hellespont, and by acquiring the Thracian Chersonese. His second time in power came after he married the daughter of Megacles, although he was later forced out by Megacles and Lycurgus. This son of Hippocrates had first come to power with much difficulty but peacefully passed rule to his son Hippias. FTP, name this man who unified Attica as the 6th century BC tyrant of Athens.

History