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.
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
Example solution: Yes
Example 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.

Problem: Article: One hundred and fifty years ago, the world's first underground railway began operating in London, running for just six kilometres from Paddington to Famngdon.Today, the network covers 408 kilometres, with 11 lines running through 270 stations.And despite every major city in the world now having its own metro system, London's is still the second-longest (Shanghai's is the first).It's no surprise that locals and travellers will all be wishing London's "Tube" a very happy 150th birthday. Londoners have an unspoken code of conduct when they travel on me Tube, and a bit of local knowledge is essential for getting around the British capital.Here we provide some tips and etiquette   for your next visit to London.          Do... Stand on the right on escalators  , walk on the left -Londoners will be quick at reminding you should you forget this.          Let other passengers off before getting on.          Give up your seat if someone needs it more than you.          Mind the gap (between the train and the platform edge) -they are sometimes pretty wide.          Don't...          Block doorways-move down inside the carriages.          Talk to people you don't know.Even if the train is delayed you should merely sigh or shake your head, rather than strike up a conversation.          Travel on the Hammersmith & City or Circle lines if you can help it-they have a poor record for delays and disruptions.          Expect air-conditioning-the low tunnels mean there's no space on most lines to install air-con equipment so expect to set hot and sweaty in summer. 
 Question: According to the text, the London Underground   _  . 
 Options: (A) was brought into use 150 years ago with only 6 miles (B) includes eleven lines, covering 270 kilometres (C) ranks first in the world in terms of the total length (D) is nicknamed the "Tube" 
 Asnwer: C

Solution: No