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 Input: Article: I arrived at the bus station much too early for the London bus, which was not to leave until five to twelve. I pushed through the crowds, looking for somewhere to sit down. Scores of people were standing about, or struggling along with their bags and the cases to find the right lines. There was a party of school girls. I could see teachers trying to keep them in order. But there was nowhere for me to sit. I stepped into the station buffet. I looked up at the clock there. It was only twenty to twelve. I found a seat opposite a large mirror on the wall. Just then a friend of mine called Jim came in and sat with me. "What time is your bus?" asked Jim. "Oh, there's a plenty of time yet," I answered. "Oh, I'll get some drinks then," said Jim. We talked while drinking. Then I looked at the clock again. "Good heavens! It's going backward!" I cried. "A moment ago it was twenty to twelve and now it's half past eleven." "You are looking at the clock in the mirror," said Jim. I could kick myself for being so stupid. I had not realized that the marks for one and eleven on the face of the clock were the same. The next bus was not to leave for another hour. I have never liked mirror since then.
Question: The writer went to the station buffet because _ .
Options: (A) he was thirsty (B) he saw the station buffet was not so crowded (C) it was still early for his bus and he couldn't find a place to sit at the bus station (D) he had changed his mind; he wouldn't go to London
Asnwer: C
Example Output: Yes

Example Input: Article: An astronomer is making a case for launching pop singer Justin Bieber into suborbital space aboard a private rocket ship. The idea is not to rid the world of the Canadian teenager -- he would come back down to Earth eventually, after all -- but rather to help jump-start the emerging suborbital spaceflight industry. It would generate a lot of public interest, which would help commercial spaceflight pick up some much-needed momentum, said Seth Shostak, senior astronomer at the Search for Extraterrestrial Intelligence (SETI) Institute in Mountain View, California. "If there's more interest, there are more customers. If there are more customers, there's more technical development. It's a positive feedback loop, and obviously that's good." Such missions would return to Earth without completing a full lap around the planet. Instead, the flights would hit the edge of space about 62 miles (100 kilometers) above Earth, experience a few minutes of weightlessness, then re-enter the atmosphere and land back at a spaceport. None of these firms are ready to fly customers yet, but some are getting close. For instance, Virgin Galactic hopes to begin powered test flights of its SpaceShipTwo vehicle later this year, with commercial operations perhaps beginning in 2013 or 2014. It is SpaceShipTwo that reportedly grabbed the attention of Beyonce and Jay-Z. Virgin Galactic has collected deposits from nearly 500 customers willing to pay $200,000 for a ride aboard SpaceShipTwo, and both Virgin and XCOR have inked deals to fly scientists and their experiments on research flights. So a suborbital market already exists -- but Shostak is thinking about ways to make it grow. A celebrity launch isn't Shostak's only idea. Suborbital firms should also promote their activities aggressively via social media, Shostak said, and they should make sure their spaceships are bristling with cameras both inside and out, to give the public dramatic views of every mission. Some observers view commercial suborbital spaceflight as a potentially transformative industry, saying it could serve as a stepping stone to the exploration and exploitation of space on an unprecedented scale. While the industry's success is far from assured, Shostak offered some reason for optimism: The American public remains keen on space.
Question: Why may Justin Bieber be sent into suborbital space?
Options: (A) To show his bravery and make him a role model for teenagers. (B) To arouse the American public's interest. (C) To help reform the spaceflight industry. (D) To film an advertisement about space.
Asnwer: B
Example Output: Yes

Example Input: Article: Thousands of people began pouring into Pennsylvania from other states. They wanted to buy lottery tickets. The tickets cost only $0.9each. But that small spending could bring them a reward of $90 million. That was the second largest lottery jackpot in history. More than 87 million tickets were bought for the Pennsylvania lottery drawing . Those who bought tickets had to choose seven numbers from 1 to 80 The chance of winning was one in 9.6 million. But that little chance certainly did not affect tickets sales. In the last few days before the drawing , tickets were selling at the unbelievable rate of 500 per second . Experts say many people buy lottery tickets because they just want to have a piece of the action .Others say the lottery is a stock market for poor people . It allows them to dream about wealth they will probably never have . But many people believe lotteries are no better than legalized gambling . Some critics note that most people who play are poor and may not be able to afford the tickets .There are also many addicts who take the game seriously, They may pour their life savings into lottery tickets .Some clubs have been formed to help them kick the habit. Politicians like lotteries because they provide money that would otherwise have to come from new taxes. The profits from lotteries are usually used to pay for education or programs for senior citizens. But critics say this arrangement just allows states to legalize vice under the name of social progress . No matter whether you regard state lotteries right or not , you can not refuse to accept their extreme popularity with many Americans .
Question: The main idea of the passage is that _ .
Options: (A) lotteries are of great benefit to everyone who buys them. (B) play a lottery is just like investing in the stock market (C) a lot of people buy lottry tickets ,but lotteries cause disagreement (D) lotteries are just legalized vice
Asnwer: C
Example Output:
Yes