Input: Article: AA gunnery was a difficult business. The problem was of successfully aiming a shell to burst close to its target's future position, with various factors affecting the shells' predicted trajectory. This was called deflection gun-laying, 'off-set' angles for range and elevation were set on the gunsight and updated as their target moved. In this method when the sights were on the target, the barrel was pointed at the target's future position. Range and height of the target determined fuse length. The difficulties increased as aircraft performance improved.

Now answer this question: What was updated on the gunsight as a target moved?

Output: 'off-set' angles for range and elevation

Input: Article: Paris hosts one of the largest science museums in Europe, the Cité des Sciences et de l'Industrie at La Villette. The National Museum of Natural History, on the Left Bank, is famous for its dinosaur artefacts, mineral collections, and its Gallery of Evolution. The military history of France, from the Middle Ages to World War II, is vividly presented by displays at the Musée de l'Armée at Les Invalides, near the tomb of Napoleon. In addition to the national museums, run by the French Ministry of Culture, the City of Paris operates 14 museums, including the Carnavalet Museum on the history of Paris; Musée d'Art Moderne de la Ville de Paris; Palais de Tokyo; the House of Victor Hugo and House of Balzac, and the Catacombs of Paris. There are also notable private museums; The Contemporary Art museum of the Louis Vuitton Foundation, designed by architect Frank Gehry, opened in October 2014 in the Bois de Boulogne.

Now answer this question: When did THe Contemporary Art museum of the Louis Vuitton Foundation open?

Output: October 2014

Input: Article: During the Middle Ages, the Eastern Roman Empire survived, though modern historians refer to this state as the Byzantine Empire. In Western Europe, Germanic peoples moved into positions of power in the remnants of the former Western Roman Empire and established kingdoms and empires of their own.

Now answer this question: What is the Eastern Roman Empire in the Middle Ages called by contemporary scholars?

Output:
the Byzantine Empire