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: It would be hard to find a person in America who has never eaten a hamburger, but this popular food was not originally made in America. The original hamburger can be traded back to the Middle Ages, when Russians ate raw meat that was scraped   and shredded  with a dull knife and formed into patties  , It was called Tartar steak. This was the first step in a long series of developments that eventually resulted in hamburger as we know it today.    German sailors picked up the raw meat delicacy   in their contacts with Russians and brought it back to their home port of Hamburg. But the people there were unused to eating raw meat , so they broiled   the outside of the Russian steak; thus the hamburger steak was born.    The hamburger steak was brought ot America in the nineteenth century immigrants. Louis Lasssen, a cook in New Haven, Connecticut, modified  the hamburger steak by sandwiching it between two pieces of  bread. But the true American hamburger came into existence in St. Louis at the Louisiana Purchase Exposition in 1904. A harried cook at the fair quickly slapped broiled beef patties between buns and served them to a demanding crowd, which gulped them down joyously.  At first this new food creation was made from scraps of poorer cuts of meat that were not used for anything else, but before scrapes were not enough. The demand for greater quantities of hamburger could only be met by using more and better cuts . Hamburger stands sprang up all over the country, and a side industry of condiments , such as ketchup and relish, grew 
 Question: What would be the best title for this passage? 
 Options: (A) The St.Louis Fair (B) .Russian Eating ?Habits (C) The Development of the Hamburger (D) The First Hamburger Stand 
 Asnwer: C
Solution:
Yes