Input: History of science
In mathematics, the Persian mathematician Muhammad ibn Musa al-Khwarizmi gave his name to the concept of the algorithm, while the term algebra is derived from al-jabr, the beginning of the title of one of his publications. What is now known as Arabic numerals originally came from India, but Muslim mathematicians did make several refinements to the number system, such as the introduction of decimal point notation. Sabian mathematician Al-Battani (850-929) contributed to astronomy and mathematics, while Persian scholar Al-Razi contributed to chemistry and medicine.

Where did Arabic numerals originate?
Output: India


Input: Article: The Enlightenment has always been contested territory. Its supporters "hail it as the source of everything that is progressive about the modern world. For them, it stands for freedom of thought, rational inquiry, critical thinking, religious tolerance, political liberty, scientific achievement, the pursuit of happiness, and hope for the future." However, its detractors accuse it of 'shallow' rationalism, naïve optimism, unrealistic universalism, and moral darkness. From the start there was a Counter-Enlightenment in which conservative and clerical defenders of traditional religion attacked materialism and skepticism as evil forces that encouraged immorality. By 1794, they pointed to the Terror during the French Revolution as confirmation of their predictions. As the Enlightenment was ending, Romantic philosophers argued that excessive dependence on reason was a mistake perpetuated by the Enlightenment, because it disregarded the bonds of history, myth, faith and tradition that were necessary to hold society together.

Now answer this question: Which type of philosophers argued that excessive dependence on reason was a mistake perpetuated by the Enlightenment?

Output: Romantic


Article: Phosphor-based LED efficiency losses are due to the heat loss from the Stokes shift and also other phosphor-related degradation issues. Their luminous efficacies compared to normal LEDs depend on the spectral distribution of the resultant light output and the original wavelength of the LED itself. For example, the luminous efficacy of a typical YAG yellow phosphor based white LED ranges from 3 to 5 times the luminous efficacy of the original blue LED because of the human eye's greater sensitivity to yellow than to blue (as modeled in the luminosity function). Due to the simplicity of manufacturing the phosphor method is still the most popular method for making high-intensity white LEDs. The design and production of a light source or light fixture using a monochrome emitter with phosphor conversion is simpler and cheaper than a complex RGB system, and the majority of high-intensity white LEDs presently on the market are manufactured using phosphor light conversion.

Question: What type of emitter is used in phosphor-based white LED methods?
Ans: monochrome


Here is a question about this article: Alexandra was born days before Kerry began law school. In 1982, Julia asked Kerry for a separation while she was suffering from severe depression. They were divorced on July 25, 1988, and the marriage was formally annulled in 1997. "After 14 years as a political wife, I associated politics only with anger, fear and loneliness" she wrote in A Change of Heart, her book about depression. Thorne later married Richard Charlesworth, an architect, and moved to Bozeman, Montana, where she became active in local environmental groups such as the Greater Yellowstone Coalition. Thorne supported Kerry's 2004 presidential run. She died of cancer on April 27, 2006.
What is the answer to this question: When did Kerry and his wife divorce?
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So... July 25, 1988


The problem: Answer a question about this article:
Compared to the vigorous convergent plate mountain-building of the late Paleozoic, Mesozoic tectonic deformation was comparatively mild. The sole major Mesozoic orogeny occurred in what is now the Arctic, creating the Innuitian orogeny, the Brooks Range, the Verkhoyansk and Cherskiy Ranges in Siberia, and the Khingan Mountains in Manchuria. This orogeny was related to the opening of the Arctic Ocean and subduction of the North China and Siberian cratons under the Pacific Ocean. Nevertheless, the era featured the dramatic rifting of the supercontinent Pangaea. Pangaea gradually split into a northern continent, Laurasia, and a southern continent, Gondwana. This created the passive continental margin that characterizes most of the Atlantic coastline (such as along the U.S. East Coast) today.
What was Pangaea's southern continent called?
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The answer: Gondwana


The problem: Answer a question about this article:
Bitumen was used in early photographic technology. In 1826 or 1827, it was used by French scientist Joseph Nicéphore Niépce to make the oldest surviving photograph from nature. The bitumen was thinly coated onto a pewter plate which was then exposed in a camera. Exposure to light hardened the bitumen and made it insoluble, so that when it was subsequently rinsed with a solvent only the sufficiently light-struck areas remained. Many hours of exposure in the camera were required, making bitumen impractical for ordinary photography, but from the 1850s to the 1920s it was in common use as a photoresist in the production of printing plates for various photomechanical printing processes.[not in citation given]
What feature of bitumen use in photography made it impractical?
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The answer:
hours of exposure