In this task, you're given an article, a question which often contains a blank, four options (associated with "A", "B", "C", "D") and the answer to that question. Your task is to classify whether the given answer is correct or not by providing "Yes" or "No", based on the article.

Article: It was a sunny winter day. I had gone down the tower when a blind man came toward me. He kept close to the wall, touching it lightly with his arm. I stood still and looked at him walking toward the tower. "What does a blind man want to climb up the tower for?" I wondered, "Not the view certainly, perhaps he wants to jump. "Thinking of this terrible reason, I thought I should follow him. He went up slowly and stopped from time to time. I followed him a few steps behind. When he got to the first corner of the bell tower, I came close to him. "Excuse me," I said as politely as I could, "but I wonder why you came up." "You'd never guess." he said. "Not the view or the fresh air on this winter day?" "No." he said. "Tell me, then." He smiled, "Perhaps climbing up the tower. You have noticed - and yet, not being blind, perhaps you won't - how the sun shines into the tower through the windows here and there, so that one can feel the cool steps suddenly become quite warm, even in winter. But behind the wall there is shade . There is no place so good as this for feeling the difference between light and darkness. Though I'm blind, I also want to feel the happiness brought by the sunlight. In fact, it isn't my first time to be here." He said and seemed as pleased as a child. I had never thought that even a blind man could have his way to enjoy the beautiful life. But we often paid no attention to its value because we never lost it. We went down the tower together and I left him. From then on, I began to treasure what life has given me.
Question: The winter met the blind man on _ .
Options: (A) a sunny winter day (B) a rainy winter day (C) a sunny summer day (D) a rainy summer day
Asnwer: A
Yes

Article: There is an English saying: "Laughter is best medicine." Until recently, few people took the saying seriously. Now, however, doctors have begun to look into laughter and the effects it has on the human body. They have found that laughter really can improve people's health. Tests were carried out to study the effects of laughter on the body. People watched funny films while doctors checked their heart, blood pressure, breathing and muscles. It was found that laughter has similar effects to physical exercises. It increases blood pressure, the heart beating and breathing. It also works several groups of muscles in the face, the stomach, and even the feet. If laughter exercises the body, it must be beneficial. Other tests have shown that laughter appears to be able to reduce the effect of pain on the body. In one experiment doctors produced pain in groups of students who listened to different radio programs. The group that tolerated the pain for the longest time was the groups which listened to a funny program. The reason why laughter can reduce pain seems to be that it helps to produce a kind of chemicals in the brain which _ both stress and pain. As a result of these discoveries, some doctors in the United States now hold laughter clinics, in which they help to improve their patients' condition by encouraging them to laugh. They have found that even if their patients do not really feel like laughing, making them smile is enough to produce beneficial effects similar to those who are caused by laughter.
Question: The main idea of the passage is _ .
Options: (A) laughter and physical exercises have similar effects. (B) smile can produce the same effects as laughter (C) pain can be reduced by laughter (D) laughter is best medicine
Asnwer: C
No

Article: As the population grows and temperatures rise, it will become more difficult to grow enough food for everyone. So, scientists are exploring the planet for plants that do not need as much water as today's crops. The Mojave Desert in the US state of California is home to some of these plants. Scientist Heather Rose Kates of the University of Florida is in that desert. She is searching along roads for a plant called coyote melon which is a kind of squash .Coyote melon may not taste good, but it can be grown in places that have little rainfall. The desert where it grows gets just 15 to 20 centimeters of rain per year, or less. Other kinds of squash need at least two and a half centimeters per week to grow. Scientists are considering combining wild coyote melon with regular squash to see if they can make a tasty vegetable that doesn't need as much water to grow. That could be useful on a planet growing warmer and more crowded every day. Andy Jarvis works at the International Center for Tropical Agriculture. He says farmers will need to produce 50 to 70 percent more food by 2050 to feed the world. So, he says, researchers are studying the wild versions of farm-grown crops. But he says there is a problem. He says many wild versions of farmed plants are disappearing. He says they are threatened and scientists have not collected their seeds for future use. Scientist Kates is part of an international effort to gather these plants and save their seeds while it is still possible. Workers are collecting wild potatoes in Argentina and wild peppers in Para-guav. The plants and seeds will be sent for storage to the Global Seed Vault in Norwav and at Kew gardens in Britain. Ms Kates spends most of her time in a laboratory. She says gathering plants has helped her understand more about them.
Question: Why do scientists study coyote melon?
Options: (A) It tastes good. (B) It is easy to cook. (C) It only needs little water to grow. (D) It is welcomed by many American people.
Asnwer: C
Yes