Problem: Sanskrit:

Sanskrit originated in an oral society, and the oral tradition was maintained through the development of early classical Sanskrit literature. Writing was not introduced to India until after Sanskrit had evolved into the Prakrits; when it was written, the choice of writing system was influenced by the regional scripts of the scribes. Therefore, Sanskrit has no native script of its own. As such, virtually all the major writing systems of South Asia have been used for the production of Sanskrit manuscripts.

What does Sanskrit not have of its own?
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A: native script

Problem: Until mid-to-late adolescence, boys and girls show relatively little difference in drinking motives. Distinctions between the reasons for alcohol consumption of males and females begin to emerge around ages 1415; overall, boys tend to view drinking in a more social light than girls, who report on average a more frequent use of alcohol as a coping mechanism. The latter effect appears to shift in late adolescence and onset of early adulthood (1819 years of age); however, despite this trend, age tends to bring a greater desire to drink for pleasure rather than coping in both boys and girls.
Do boys or girls view drinking in a more social light?
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Answer: boys

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The Feinberg School of Medicine (previously the Northwestern University Medical School) has produced a number of notable graduates, including Mary Harris Thompson, Class of 1870, ad eundem, first female surgeon in Chicago, first female surgeon at Cook County Hospital, and founder of the Mary Thomson Hospital, Roswell Park, Class of 1876, prominent surgeon for whom the Roswell Park Cancer Institute in Buffalo, New York, is named, Daniel Hale Williams, Class of 1883, performed the first successful American open heart surgery; only black charter member of the American College of Surgeons, Charles Horace Mayo, Class of 1888, co-founder of Mayo Clinic, Carlos Montezuma, Class of 1889, one of the first Native Americans to receive a Doctor of Medicine degree from any school, and founder of the Society of American Indians, Howard T. Ricketts, Class of 1897, who discovered bacteria of the genus Rickettsia, and identified the cause and methods of transmission of rocky mountain spotted fever, Allen B. Kanavel, Class of 1899, founder, regent, and president of the American College of Surgeons, internationally recognized as founder of modern hand and peripheral nerve surgery, Robert F. Furchgott, Class of 1940, received a Lasker Award in 1996 and the 1998 Nobel Prize in Physiology or Medicine for his co-discovery of nitric oxide, Thomas E. Starzl, Class of 1952, performed the first successful liver transplant in 1967 and received the National Medal of Science in 2004 and a Lasker Award in 2012, Joseph P. Kerwin, first physician in space, flew on three skylab missions and later served as director of Space and Life Sciences at NASA, C. Richard Schlegel, Class of 1972, developed the dominant patent for a vaccine against human papillomavirus (administered as Gardasil) to prevent cervical cancer, David J. Skorton, Class of 1974, a noted cardiologist became president of Cornell University in 2006, and Andrew E. Senyei, Class of 1979, inventor, venture capitalist, and entrepreneur, founder of biotech and genetics companies, and a university trustee.
Which graduate of The Feinburg School of Medicine was the Roswell Park Cancer Institute named after?
A: Mary Harris Thompson

Context and question: The currentvoltage characteristic of an LED is similar to other diodes, in that the current is dependent exponentially on the voltage (see Shockley diode equation). This means that a small change in voltage can cause a large change in current. If the applied voltage exceeds the LED's forward voltage drop by a small amount, the current rating may be exceeded by a large amount, potentially damaging or destroying the LED. The typical solution is to use constant-current power supplies to keep the current below the LED's maximum current rating. Since most common power sources (batteries, mains) are constant-voltage sources, most LED fixtures must include a power converter, at least a current-limiting resistor. However, the high resistance of three-volt coin cells combined with the high differential resistance of nitride-based LEDs makes it possible to power such an LED from such a coin cell without an external resistor.
What can cause a large change in current in non-LEDs?
Answer: unanswerable

Question: Although the Palaeologi emperors recaptured Constantinople from the Western Europeans in 1261, they were never able to regain control of much of the former imperial lands. They usually controlled only a small section of the Balkan Peninsula near Constantinople, the city itself, and some coastal lands on the Black Sea and around the Aegean Sea. The former Byzantine lands in the Balkans were divided between the new Kingdom of Serbia, the Second Bulgarian Empire and the city-state of Venice. The power of the Byzantine emperors was threatened by a new Turkish tribe, the Ottomans, who established themselves in Anatolia in the 13th century and steadily expanded throughout the 14th century. The Ottomans expanded into Europe, reducing Bulgaria to a vassal state by 1366 and taking over Serbia after its defeat at the Battle of Kosovo in 1389. Western Europeans rallied to the plight of the Christians in the Balkans and declared a new crusade in 1396; a great army was sent to the Balkans, where it was defeated at the Battle of Nicopolis. Constantinople was finally captured by the Ottomans in 1453.
Is there an answer to this question: Who was defeated at the Battle of Kosovo?

Answer: Serbia

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The eastern arm shows considerable diversity. In England it is generally long and may have two distinct sections, both choir and presbytery. It is often square ended or has a projecting Lady Chapel, dedicated to the Virgin Mary. In France the eastern end is often polygonal and surrounded by a walkway called an ambulatory and sometimes a ring of chapels called a "chevet". While German churches are often similar to those of France, in Italy, the eastern projection beyond the transept is usually just a shallow apsidal chapel containing the sanctuary, as at Florence Cathedral.
What shape does the eastern end often exhibit in France?
A:
polygonal