input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: To us it seems so natural to put up an umbrella to keep the water off when it rains.But actually the umbrella was not invented as protection against rain.Its first use was as a shade against the sun. Nobody knows who first invented it, but the umbrella was used in very ancient times.Probably the Chinese were the earliest to use it in the eleventh century BC.We know that the umbrella was used in ancient Egypt and Babylon as a sunshade.And there was a strange thing connected with its use: it became a symbol of honor and authority.In the Far East in ancient times, the umbrella was allowed to be used only by royalty or by those in high offices. In Europe, the Greeks were the earliest to use the umbrella as a sunshade.And the umbrella was allowed in common use in ancient Greece.But it is believed that the earliest persons in Europe to use the umbrella as protection against rain were the ancient Romans. During the Middle Ages, the use of the umbrella practically disappeared.Then it appeared again in Italy in the late sixteenth century.And again, it was considered a symbol of power and authority.In around 1680, the umbrella appeared in France and later on in England. By the eighteenth century, the umbrella was used against rain throughout most of Europe.Umbrellas have not changed much in style during all this time, though they have become much lighter in weight.It wasn't until the twentieth century that women's umbrellas began to be made in a whole variety of colors. Options: A protection against rain B shade against the sun C a symbol of power and authority D a symbol of honor and authority Answer: B shade against the sun Question:
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output: The first use of umbrella was as _ .

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Elderly women who eat foods higher in potassium are less likely to have strokes and die than women who eat less potassium-rich foods, according to new research in the American Heart Association. "Previous studies have shown that potassium consumption may lower blood pressure. But whether potassium intake could prevent stroke or death wasn't clear," said Smoller, professor of the department of population health at Albert Einstein College of Medicine, Bronx, NY. Researchers studied 90,137 women, aged from 50 to 79 for an average 11 years. They looked at how much potassium the women consumed, as well as if they had strokes, including ischemic strokes , or died during the study period. Women in the study were stroke-free at the start and their average dietary potassium intake was 2,611 mg/day. Results of this study are based on potassium from food, not supplements. The researchers found: Women who ate the most potassium were 12 percent less likely to suffer stroke in general and 16 percent less likely to suffer an ischemic stroke than women who ate the least. Women who ate the most potassium were 10 percent less likely to die than those who ate the least. Among women who did not have high blood pressure, those who ate the most potassium had a 27 percent lower ischemic stroke risk and 21 perc ent reduced risk for all stroke types, compared to women who ate the least potassium in their daily diets. Among women with high blood pressure, those who ate the most potassium had a lower risk of death, but potassium intake did not lower their stroke risk. "Our findings suggest that women need to eat more p otassium-rich foods. You won't find high potassium in junk food. Some foods rich in potassium include white and sweet potatoes, bananas and white beans." The U.S. Department of Agriculture recommends that women eat at least 4,700 mg of potassium daily. "Only 2.8 percent of women in our study met or went beyond this level. The World Health Organization's daily potassium recommendation for women is lower, at 3,510... Options: A Increasing potassium is definitely a good idea for all elderly women. B Elderly women with high blood pressure benefit more from potassium. C Potassium intake is more beneficial to those without high blood pressure. D There was not any association between potassium intake and ischemic strokes. Answer: C Potassium intake is more beneficial to those without high blood pressure. Question:
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output: What conclusion can be drawn from the research findings?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Sherlock Holmes was the greatest detective in history. His astonishing power of observation and analysis meant that he was able to solve cases which left the real police completely . As a problem solver in the law forced business, he was a knowledgeable person equal to Superman, the comic book hero. Like Superman, of course, Holmes did not exist. He was the creation of a Scottish doctor and novelist Arthur Conan Doyle, and remains one of the most famous literary fiction characters of all time. Holmes' general rule when trying to solve a case was as follows: completely get rid of the impossible. Then whatever remains, however improbable, must be the truth. It's said that Holmes' powers of deduction were superhuman, particularly his ability to process information from what he observed. In a story called The Boscombe Valley Mystery, Holmes examines the area near a lake where a murder has been committed. The local police have already searched the area and found no clues. Holmes spends ten minutes in the area, and announces that the murderer "is a tall man, left-handed, limps with the right leg, wears thick-soled shooting boots and a gray coat, smokes Indian cigars, uses a cigar holder, and carries a penknife in his pocket. There are several other indications, but these may be enough to aid us in our search." Needless to say, he has found evidence to support all of these statements. The fictional Holmes lived in an apartment at 221 Baker Street, a real street in Central London. When Conan Doyle wrote about Holmes, there was no 221 Baker Street, but after the street was extended northwards, there was. There is currently a bank at that address. The fact that Holmes didn't actually exist doesn't stop thousands of people writing to him for help every year.The bank kindly responds to every letter they receive with the following message: "Mr. Holmes thanks you for your letter. At the moment he is retired in Sussex, keeping bees, and does not undertake detective work nowadays." Options: A Neither Superman nor Holmes was a real character. B Both Superman and Holmes used super intellect to solve problems. C Superman was a comic book figure, while Holmes was a real detective. D Superman and Holmes were equally intelligent and brave. Answer: A Neither Superman nor Holmes was a real character. Question:
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output:
How does the writer describe Holmes and Superman?