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Article: A small dog should be _ after eating a handful M&M's, at least according to conventional wisdom. But watching "Moose", a friend's five-pound Chihuahua, race around a living room after his sweet snack makes one wonder: Is chocolate truly poisonous to dogs? Dogs and humans have similar tastes. But unlike humans, our companions experience dangerous effects from eating chocolate --it can poison them and in some cases is fatal. Chocolate's danger to dogs depends on its quality. Chocolate is processed from the bitter seeds of the cocoa tree, which contain a family of compounds known as methylxanthines . This class of substances includes caffeine and the related chemical theobromine . Chocolate contains a significant amount of theobromine and smaller amounts of caffeine. These chemicals can cause a dog's heart to race up to twice its normal rate, and some dogs may run around as if "they drank a gallon of espresso ," according to Hackett. Dogs are capable of handling some chocolate, but it depends on the animal's weight and the type of chocolate it eats. Unsweetened baking chocolate contains more than six times as much theobromine as milk chocolate, although amounts vary between cocoa beans as well as different brands of chocolate. Less than four ounces of milk chocolate is potentially fatal for Moose and other small dogs. Around every confection-centered holiday -- Valentine's Day, Easter and Christmas -- at least three or four dogs are hospitalized overnight in the animal medical center at Colorado State. But in 16 years, Hackett has seen just one dog die from chocolate poisoning, and he suspects it may have had an underlying disease that made it more exposed to chocolate's heart -racing effect. Question: The passage is mainly about _ . Yes or no, is the answer "the relation between methylxanthines and chocolate poisoning"?
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No

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Article: In tradition education, the teacher may feel that the students are not very grown up. Usually, teachers are older than students, and teachers feel that students are young and do not know much about the world. The teachers feel that they must tell the students what to do most of the time, and that they must also make the students study specific things. In open education, the teacher's methods are very different. These teachers feel that the students are human beings first, and students second. They expect the students to be responsible for the things that they do, just as adults are. A student's ideas and feelings are just as important as the teacher's. The teacher allows the students to decide what they want to do, and does not make them study what they do not want to. The teacher lets them decide what to study and how much to study. It's very important for the teacher to show how he or she feels about students. Question: What's the theory of open education? Yes or no, is the answer "The students are human beings first, and students second."?
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No

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Article: One day an ant was drinking at a small stream and fell in. She made desperate efforts to reach the side, but made no progress at all. The poor ant almost exhausted was still bravely doing her best when a dove saw her. Moved with pity, the bird threw her a blade of grass, which supported her like a raft, and thus the ant reached the bank again. While she was resting and drying herself in the grass, she heard a man come near. He was walking along barefooted with a gun in his hand. As soon as he saw the dove, he wished to kill it. He would certainly have done so, but the ant bit him in the foot just as he raised his gun to fire. He stopped to see what had bit him, and the dove immediately flew away. It was an animal much weaker and smaller than herself that had saved her life. Question: The ant could not reach the side though _ . Yes or no, is the answer "she tried very hard"?
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No