You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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: 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: Yes
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.

New input: Article: Parties held by the wealthy seldom welcome poor guests.But last week China made it through the doors into a gathering of the world's richest countries. Jin Renqing ,Chian's finance minister,and Zhou Xiaochuan,governor of the People's Bank of China,joined a meeting of the Group of Seven(G7)on October1,2004.It is the fist time that China has had direct talks with the club.It was a good chance to share the world powers'thoughts about critical economic issues and _ understanding. China'a participation is a natural part of its increasingly important role in the global economy.China is the world 's factory and the biggest market. America and China made up almost half of global economic growth last year."If Anerican consumers and Chinese producers were to reduce their activities at the same time,global growth would drop greatly,"said the Economist,a leading British economics magazine. Up to now chinese economic stability has been closely related to world development."The increasingly connected global economy means that China should be a part of the meeting."said Stephen Roach,a world famous economist. During the meeting,China represented developing countries.It callde on the world's developed nations to increase their spending on aid to poorer countries.Jin said that overall official help from developed countries is only 0.23 per cent of their Gross Domestic Product ,much lower than the 0.7per cent UN targert.And this should be changed.
Question: According to the passage,China particpates in the meeting of G7 because _ .
Options: (A) China has become one of the richest countries of the world (B) China is playing a more important part in the world economy (C) China has more factories than any other countries in the world (D) developing countries want China to speak for them
Asnwer: B
Solution:
Yes