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.
One 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
Solution is here: Yes
Explanation: 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.

Now, solve this: Article: Traveling in Viet Nam was like visiting a mysterious neighbor. You have lived next door to each other for years but knew very little about what happened on the other side of the fence. I traveled there last August. A simple 180-kilometre trip from a Chinese border town to Hanoi, capital of Viet Nam, took an adventurous eight hours. That's because the country still doesn't have a modern expressway system. The major passage going through the peninsula is only a two-way road. Also, many areas are mountainous. Vietnamese drivers are impatient and fearless. They compete with each other at full speed no matter how scared the passengers feel. When the bus shook us violently many times, the driver made a joke to make us feel better. "See, this is just a gift Vietnamese people give you, a free passage service." It was midnight when I reached the hotel. Turning on the television, I was surprised by something : All the characters in the TV dramas spoke in the same voice. At present, modern Korean dramas and historical Chinese dramas are popular with the Vietnamese. But it seemed they didn't have enough money to dub  all these programmes. So, the same boring woman would appear behind every drama to speak for the roles. The next morning when I opened the window, I found myself in a huge "garden". The buildings in the streets were dressed in all kinds of colors you can imagine. Vietnamese residents are allowed to paint their houses as they like. Each one is different and the colors bring the city alive. 
 Question: Before the author traveled in Viet Nam, he   _  . 
 Options: (A) had known a lot about the neighboring country (B) knew little about the neighboring country (C) had thought he would have a chance to visit the country (D) thought the country was very rich 
 Asnwer: D
Solution:
No