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: The butterfly Ecological Park, which opened early this May, is located in Dabao Village in Longfeng Township of Pengzhou City, some 65 kilometers to the north of Chengdu downtown. The park, covering an area of 67 hectares, is more famous for a variety of butterflies living in _ surroundings and houses a collection of some 30,000 butterfly species. An ideal site for parents and kids alike to enjoy the sight of "the flying flowers" and the ecological area. A great variety of butterflies live in China, and Sichan and Yunnan are rich in butterfly resources. At present, 702 species have been discovered in Sichuan, where the number of butterfly species equals to the total of Europe. In the Longmen Mountain of Pengzhou City alone, there are more than 500 species. The butterfly Ecological Park, a project of RMB200 million at the foot of the Longmen Mountain, is the natural habitat of butterflies. The park also has educational and cultural programs. The park has prepared many spring and summer activities for visitors, including a scientific exhibition about butterflies, a "butterfly valley" where visitors can have a close look at butterflies, even with them resting on the shoulders, and enjoy themselves in activities designed for children. Tourists can enjoy the splendid scenery of thousands of butterflies at the "butterfly valley" and appreciate more than 30,000 different kinds of butterfly species at the exhibition area. Classified as the only category I butterfly species the Wild Animal Protection Law in 1989 in China, the Golden Kaiserihind is the most expensive species living in "butterfly valley", with an estimated value of RMB10,000 each. 
 Question: The author mentioned Europe in the essay to   _  ? 
 Options: (A) stress that Sichuan has plenty of butterfly resources. (B) state that a large number of butterflies live in Europe. (C) tell readers that more than 500 species of butterflies live in Europe. (D) emphasize that Europe is less famous than the Longmen Mountain. 
 Asnwer: A

Solution: Yes