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The Yangtze River and its tributaries flows through the mountains of western Sichuan and the Sichuan Basin; thus, the province is upstream of the great cities that stand along the Yangtze River further to the east, such as Chongqing, Wuhan, Nanjing and Shanghai. One of the major tributaries of the Yangtze within the province is the Min River of central Sichuan, which joins the Yangtze at Yibin. Sichuan's 4 main rivers, as Sichuan means literally, are Jaling Jiang, Tuo Jiang, Yalong Jiang, and Jinsha Jiang.
Which river flows through the Nanjing Basin?
A: unanswerable

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In the UK, Italy and Australia which share the PAL A region, two versions of the NES were released; the "Mattel Version" and "NES Version". When the NES was first released in those countries, it was distributed by Mattel and Nintendo decided to use a lockout chip specific to those countries, different from the chip used in other European countries. When Nintendo took over European distribution in 1990, they produced consoles that were then labelled "NES Version"; therefore, the only differences between the two are the text on the front flap and texture on the top/bottom of the casing.
Which company didn't distribute the NES to the UK, Italy, and Australia?
A: unanswerable

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In ancient Greece, the epics of Homer, who wrote the Iliad and the Odyssey, and Hesiod, who wrote Works and Days and Theogony, are some of the earliest, and most influential, of Ancient Greek literature. Classical Greek genres included philosophy, poetry, historiography, comedies and dramas. Plato and Aristotle authored philosophical texts that are the foundation of Western philosophy, Sappho and Pindar were influential lyric poets, and Herodotus and Thucydides were early Greek historians. Although drama was popular in Ancient Greece, of the hundreds of tragedies written and performed during the classical age, only a limited number of plays by three authors still exist: Aeschylus, Sophocles, and Euripides. The plays of Aristophanes provide the only real examples of a genre of comic drama known as Old Comedy, the earliest form of Greek Comedy, and are in fact used to define the genre.
Which playwright provided the only real examples of the genre of New Comedy?
A: unanswerable

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A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.
A special memory cell of a CPU is called what?
A:
a register