TASK DEFINITION: In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
PROBLEM: Article: A board game is a game played on a pre-marked surface or "board" according to a set of rules. Board games have been played in most cultures and societies throughout history. Do you think of yourself as a bit of an expert at board games like chess or Go? Maybe you're not quite as good as you think. New research from the University of Manchester and Oxford suggests complex games like these are impossible to learn fully. They may even be too complex for the human mind to understand. Researchers studied two-player games, to try and understand the strategies which people use to make decisions during the game. Some games with two players are simple, with only a small number of possible moves. Players can quickly work out the best strategy but that means the game soon becomes boring. It gets more interesting when there are many possible moves. That's why people are so fascinated by complex board games like chess or Go, or some card games. But what the researchers found was that with difficult games, players find it hard to work out the best strategy and their actions become less reasonable. This research is part of the field called game theory: the study of human strategic decision-making. Much thinking on how people play complex games is based on something called "the balance point", which is when players have a perfect knowledge of what they are going to do and of what their rivals are going to do. When you add more than two players then of course the game becomes even harder to understand. Trading on the stock market is an example of a complex multi-player game.
Answer: Mahjong

SOLUTION: Which of the following games belongs to board games?

PROBLEM: Article: For centuries Stonehenge has mystified and enraptured archaeologists and visitors. So maybe it is not surprising that another monumental wonder from prehistory has been overlooked for so long - even though it is just a mile away. Experts have discovered an 'extraordinary' line of giant stones that dates back more than 4,500 years. The area around Stonehenge is littered with prehistoric sights but the 90 or more stones, lying 3ft underground, have only just been discovered by sophisticated radar equipment towed by radar equipment. The buried monoliths are each up to 15ft tall. Instead of being arranged in a circle as they are at Stonehenge, it is thought they once formed a long standing line. 'We are looking at one of the largest stone monuments in Europe and it has been under our noses for something like 4,000 years,' said Professor Vince Gaffney, from the University of Bradford, one of the archaeologists leading the research. 'It's truly remarkable. We don't think there's anything quite like this anywhere else in the world. This is completely new and the scale is extraordinary." Prof. Gaffney believes the stones may have been planted by the same people who built Stonehenge, but he doubts whether there is a direct link between the two monuments. These stones were placed along a steep slope, cut into a natural dry valley to form a C-shaped feature. Precisely why the stones were put there remains a mystery. The archaeologists believe that at some stage the stones were pushed over. This was not done to damage the monument but rather to preserve whatever it was about the stones that seemed so important. "There was a transformation in the landscape that we do not understand," Prof. Gaffney said. "The stones had significance. These were special places. Societies were organized, as with the great cathedrals, to create these things."
Answer: It is the largest stone monument all over the world.

SOLUTION: What can we know about Stonehenge from the passage?

PROBLEM: Article: A lot more people are about to get a chance to buy Google Glass. It's the Internet-connected eyewear that has become the hottest sale. Google will sell the "Explorer" version of Glass to any U.S. person who places an online order for the device beginning at 9am. PDT April 15. The product will cost $1,500. Google is saying how many sets of Glass will be available during the limited-time offer. This version of Glass, though, still isn't the perfect product that Google hopes to sell in stores later this year. For now, Google is still trying to recruit more people willing to serve as volunteers for its attempt to build a wearable device that features some of the same feature as a smart phone. " Our Explorers are moms, bakers, surgeons, rockers, and each new Explorer has brought a new view that is making Glass better," Google said. The device has a small screen attached above the right eye. A user can check e-mails, see Twitter post or get directions without having to use a phone. It can also take hands-free photos and video through voice-activated commands. The ability to record images so easily has raised safely concerns about drivers wearing Glass. The lawmakers have to draw up new rules forbidding use of the device in moving vehicles. Google regards Glass as a breakthrough . It will make it easier for people to surf the Internet while on the go. They also hope that the device could help police officers, firefighters, doctors and reporters do their jobs better.
Answer: It doesn't contain any actual glass in the future.

SOLUTION:
What is special about Google Glass?