The problem: Answer a question about this article:
On June 12, 1990, the Congress of People's Deputies of the Republic adopted the Declaration of State Sovereignty of the Russian SFSR, which was the beginning of the "War of Laws", pitting the Soviet Union against the Russian Federation and other constituent republics.
What was the name of the period inaugurated by the passage of the Declaration of State Sovereignty of the Russian SFSR?
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The answer: the "War of Laws"


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Neptune is similar in composition to Uranus, and both have compositions that differ from those of the larger gas giants, Jupiter and Saturn. Like Jupiter and Saturn, Neptune's atmosphere is composed primarily of hydrogen and helium, along with traces of hydrocarbons and possibly nitrogen, but contains a higher proportion of "ices" such as water, ammonia, and methane. However, its interior, like that of Uranus, is primarily composed of ices and rock, and hence Uranus and Neptune are normally considered "ice giants" to emphasise this distinction. Traces of methane in the outermost regions in part account for the planet's blue appearance.
What "ices" makes up Neptune? 
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The answer: water, ammonia, and methane


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China, France, Russia, the United Kingdom and the United States are often referred to as great powers by academics due to "their political and economic dominance of the global arena". These five nations are the only states to have permanent seats with veto power on the UN Security Council. They are also the only recognized "Nuclear Weapons States" under the Nuclear Non-Proliferation Treaty, and maintain military expenditures which are among the largest in the world. However, there is no unanimous agreement among authorities as to the current status of these powers or what precisely defines a great power. For example, sources have at times referred to China, France, Russia and the United Kingdom as middle powers.
What other countries are referred to as middle powers?
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The answer: China, France, Russia and the United Kingdom


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Also labeled an Orphist by Apollinaire, Marcel Duchamp was responsible for another extreme development inspired by Cubism. The ready-made arose from a joint consideration that the work itself is considered an object (just as a painting), and that it uses the material detritus of the world (as collage and papier collé in the Cubist construction and Assemblage). The next logical step, for Duchamp, was to present an ordinary object as a self-sufficient work of art representing only itself. In 1913 he attached a bicycle wheel to a kitchen stool and in 1914 selected a bottle-drying rack as a sculpture in its own right.
What two items did Duchamp attach together in 1913? 
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The answer:
a bicycle wheel to a kitchen stool