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In addressing the question of who invented the incandescent lamp, historians Robert Friedel and Paul Israel list 22 inventors of incandescent lamps prior to Joseph Swan and Thomas Edison. They conclude that Edison's version was able to outstrip the others because of a combination of three factors: an effective incandescent material, a higher vacuum than others were able to achieve (by use of the Sprengel pump) and a high resistance that made power distribution from a centralized source economically viable.
Which three historians wrote the conclusion that Edison's version was more viable than other early versions?
A: unanswerable

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In ancient China, early literature was primarily focused on philosophy, historiography, military science, agriculture, and poetry. China, the origin of modern paper making and woodblock printing, produced one of the world's first print cultures. Much of Chinese literature originates with the Hundred Schools of Thought period that occurred during the Eastern Zhou Dynasty (769-269 BCE). The most important of these include the Classics of Confucianism, of Daoism, of Mohism, of Legalism, as well as works of military science (e.g. Sun Tzu's The Art of War) and Chinese history (e.g. Sima Qian's Records of the Grand Historian). Ancient Chinese literature had a heavy emphasis on historiography, with often very detailed court records. An exemplary piece of narrative history of ancient China was the Zuo Zhuan, which was compiled no later than 389 BCE, and attributed to the blind 5th century BCE historian Zuo Qiuming.
What did Ancient Asian literature put heavy emphasis on?
A: unanswerable

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Puppetry and shadow plays were also a favoured form of entertainment in past centuries, a famous one being Wayang from Indonesia. The arts and literature in some of Southeast Asia is quite influenced by Hinduism, which was brought to them centuries ago. Indonesia, despite conversion to Islam which opposes certain forms of art, has retained many forms of Hindu-influenced practices, culture, art and literature. An example is the Wayang Kulit (Shadow Puppet) and literature like the Ramayana. The wayang kulit show has been recognized by UNESCO on November 7, 2003, as a Masterpiece of Oral and Intangible Heritage of Humanity.
Art & literature in Southeast Asia is influenced by which religion?
A: Hinduism

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Size, however, is not the only difference: there are also substantial differences in shape. The hindbrain and midbrain of mammals are generally similar to those of other vertebrates, but dramatic differences appear in the forebrain, which is greatly enlarged and also altered in structure. The cerebral cortex is the part of the brain that most strongly distinguishes mammals. In non-mammalian vertebrates, the surface of the cerebrum is lined with a comparatively simple three-layered structure called the pallium. In mammals, the pallium evolves into a complex six-layered structure called neocortex or isocortex. Several areas at the edge of the neocortex, including the hippocampus and amygdala, are also much more extensively developed in mammals than in other vertebrates.
The three-layered structure covering the cerebrum in non-mammals is known as what?
A:
pallium