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.

Let me give you an example: Article: Homework can put you in a badmood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.
Question: Researchers did experiments on kids in order to find out _ .
Options: (A) how they really feel when they are learning (B) whether mood affects their learning ability (C) what methods are easy for kids to learn (D) the relationship between sadness and happiness
Answer: B
The answer to this example can be: Yes
Here is why: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment. Hence, B is the correct answer and output is Yes.

OK. solve this:
Article: A weather system known as a polar vortex brought dangerously cold weather to large parts of the United States this week. A polar vortex is a cold, thick low pressure system. The air turns counter-clockwise when on the move. The polar vortex started up in Canada. After crossing the border, it moved deep into the southeastern United States. The polar vortex brought the coldest temperatures in more than 20 years to many areas. Alice Jenkins lives in Washington D.C. "I have a coat on. I have three sweaters. I have two blouses. But I don't feel like I have anything on." Another woman, named Amanda, lives nearby in Maryland. "It's D.C. It's not supposed to be this cold." The extreme weather started with a low-pressure system near the North Pole. The Arctic air was pushed as far south as Alabama on wind currents known as the jet stream. The bitter cold covered much of the central United States, forcing schools, government offices and businesses to close. But the polar vortex did not have the same effect everywhere. Interestingly enough, it is warmer in Alaska and also somewhat warmer over Greenland because when you exhaust cold air in the North Pole and the Arctic region, when it's forced southward, it can't all stay there. Basically it's rushing towards us in the United States." Camden Walker, a weather expert, says the weather system moved away quickly from places like Washington. But the cold air and high winds were staying longer in the middle of the country. Temperatures of minus 10 degrees Celsius or lower were reported in Washington, New York, Boston and Philadelphia. In fact, temperatures in all or parts of the 50 states were below freezing at some point on Tuesday. Even in Hawaii, it was minus six degrees at the top of the state's highest mountain. The effect of the polar vortex was extensive. Airline companies cancelled more than 11,000 flights over a four day period. The cold weather also interfered with train service. In the south, the Tennessee Valley Authority said it set a single day record for electricity as homeowners struggled to stay warm. But there was more to the picture.
Question: Which of the following statements about the polar vortex is NOT true?
Options: (A) It came from around the North Pole area. (B) All the places it swept across became extremely cold. (C) It caused Washington, (D) It caused great losses in the U.S.
Asnwer: B
Answer:
Yes