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.

Input: Consider 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

Output: Yes

Input: Consider Input: Article: DJs(disc jockeys) are the people who play and present music on the radio, or in nightclub. A VJ(video jockey) is a person who introduces music videos on television. VJs were first seen on television in the early 1980s when MTV went on the air. As MTV became popular, and the audience for music videos expanded, a variety of other music video channels started broadcasting. In addition to rock music, there were channels for people who had a lot of interest in alternative kinds of music, such as country music, light music, and R&B(rhythm and blues), and all of these channels needed VJs. By the 1990s, international music video channels like Channel V in Asia and VIVA in Europe had started. The VJs for the new international stations had to be chosen carefully. Although some VJs did shows that focused on small audiences and showed mostly local content, other VJs presented shows for international viewers. These VJs, and the material they presented, needed to be popular in several different cultures. One successful international VJ in Asia is Asha Gill. She is from prefix = st1 /Malaysia, but her parents and grandparents are fromIndia,FranceandEngland. She speaks three languages and has fans across Asia, fromJapanto theUnited Arab Emirates. Another VJ who has made a big hit in Asia is Lili. She is actually a computer- Animated VJ on MTV Asia. An actress wearing special computer equipment makes Lili move like a puppet . The actress also talks for Lili, and her shows can be seen in five languages. When asked what makes a good video jockey, many successful VJs have given similar answers. To be a good VJ you need to know a lot about music, you need to be funny, and you can't be shy.
Question: The passage is mainly about _ .
Options: (A) how to become a VJ (B) the most popular VJ today (C) the differences between DJs and VJs (D) some general information about VJs
Asnwer: D

Output: Yes

Input: Consider Input: Article: I had recently arrived in London and I wanted to see some of the famous places. Should I go to the seaside? Or maybe one of the famous parks? I walked along the street, past a kindergarten playground, and suddenly saw an underground railway station. I was surprised because it was not on my map. I went to buy a ticket. The ticket-seller looked very old. He gave me a ticket, said "Remember it's a return", laughed and walked away without taking my money. Was it special for tourists? A train arrived. I could not see any other passengers. I got on and the doors closed. I suddenly felt I should not have got onto the train. It started to go faster and faster, shooting along the tracks. As it entered the tunnel, everything became as dark as midnight and I do not remember the next few minutes. The train came to a station and I got out. I could see light shining in the distance so I walked towards _ and came to a door. Beyond it there was a busy street. There were lots of English people walking about, and I could see some of the famous buildings of London, but there was something wrong. The people's clothes were strange. There were no cars, no motorbikes--but there were horses everywhere. Was someone making a film? "Excuse me," I said to a man. "Would you mind telling me where I am and what is happening?" "What do you mean? Who are you? Where do you come from? Are you from China? This is London and everyone's going to work. Can't you see that?" he asked. "Thank you, sir. I'm sorry, but could I look at your newspaper?" I asked. "You can have it," he said as he walked off. I looked at it; I saw "New Bicycle Law" and above that "July 5, 1880". Maybe I should have walked around, but I ran back to the door. I waited a long time. I was very afraid. A train came. I got on. It took me back to the first station. As I left, a woman asked, "What were you doing in that abandoned station?" I had no answer, but I still had the newspaper in my hand.
Question: Why was the author surprised at the beginning of the story?
Options: (A) Because he suddenly saw an underground railway station. (B) Because he walked past a kindergarten playground. (C) Because the ticket-seller looked very old. (D) Because he couldn't find the station on his map.
Asnwer: D
Output: Yes