Problem: Please answer a question about the following article about Classical music:
Performance of classical music repertoire requires a proficiency in sight-reading and ensemble playing, harmonic principles, strong ear training (to correct and adjust pitches by ear), knowledge of performance practice (e.g., Baroque ornamentation), and a familiarity with the style/musical idiom expected for a given composer or musical work (e.g., a Brahms symphony or a Mozart concerto).
Performance of classical music requires proficiency in what type of principles?
A: harmonic
Problem: Please answer a question about the following article about Russian Soviet Federative Socialist Republic:
On December 25, 1991, the Russian SFSR was renamed the Russian Federation. On December 26, 1991, the USSR was self-dissolved by the Soviet of Nationalities, which by that time was the only functioning house of the Supreme Soviet (the other house, Soviet of the Union, had already lost the quorum after recall of its members by the union republics). After dissolution of the USSR, Russia declared that it assumed the rights and obligations of the dissolved central Soviet government, including UN membership.
What house of the Supreme Soviet was not functioning as of December 26, 1991?
A: Soviet of the Union
Problem: Please answer a question about the following article about History of science:
The Jesuit China missions of the 16th and 17th centuries "learned to appreciate the scientific achievements of this ancient culture and made them known in Europe. Through their correspondence European scientists first learned about the Chinese science and culture." Western academic thought on the history of Chinese technology and science was galvanized by the work of Joseph Needham and the Needham Research Institute. Among the technological accomplishments of China were, according to the British scholar Needham, early seismological detectors (Zhang Heng in the 2nd century), the water-powered celestial globe (Zhang Heng), matches, the independent invention of the decimal system, dry docks, sliding calipers, the double-action piston pump, cast iron, the blast furnace, the iron plough, the multi-tube seed drill, the wheelbarrow, the suspension bridge, the winnowing machine, the rotary fan, the parachute, natural gas as fuel, the raised-relief map, the propeller, the crossbow, and a solid fuel rocket, the multistage rocket, the horse collar, along with contributions in logic, astronomy, medicine, and other fields.
Who was the Needham Research Institute named after?
A: Joseph Needham
Problem: Please answer a question about the following article about Mexico City:
Mexico City is Latin America's leading center for the television, music and film industries. It is also Mexico's most important for the printed media and book publishing industries. Dozens of daily newspapers are published, including El Universal, Excelsior, Reforma and La Jornada. Other major papers include Milenio, Cronica, El Economista and El Financiero. Leading magazines include Expansion, Proceso, Poder, as well as dozens of entertainment publications such as Vanidades, Quien, Chilango, TV Notas, and local editions of Vogue, GQ, and Architectural Digest.
How many entertainment magazines are published in Mexico City?
A:
dozens