In this task, you're given an article and an answer. Your task is to generate the fill-in-the-blank question for this answer based on the given article. The blanks are always at the end of the question, and can be filled with more than one word or phrase.
One 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.
Answer: whether mood affects their learning ability
Solution is here: Researchers did experiments on kids in order to find out _ .
Explanation: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

Now, solve this: Article: We grew up with the familiar toy bricks that gave us the imagination to build towers and castles. Generations have been attracted by this toy that lets children and adults alike create anything and everything. But with over 200 millions sets being sold a year in over 100 countries, the question remains -- where did Lego actually come from? Lego was born from the creative mind of Danish carpenter , Ole Kirk Christiansen, back in the early 1930s. He established a small business in Denmark. He and his team built a variety of household goods like ironing boards along with wooden toys. The Lego name was adopted in 1934, formed from the Danish words "Leg Godt" or "play well", which means "I study" or "I put together" in Latin. Christiansen's company continued to make wooden toys until 1942 when fire struck -- the entire Lego factory burned to the ground. Unwilling to give in, the factory was rebuilt and the production line restarted soon after. By 1954, Christiansen's son, Godtfred, had become the junior managing director of the Lego Group. It was during his conversation with an overseas buyer that he was struck by the idea of a toy system. For over 30 years, the Lego Company made only toys and related goods. Then, in 1968, the company opened its first Legoland in Denmark. Combining the Lego building bricks with a computer, the Robotics Invention System 1.5 is now the most advanced toy in the Lego Company, which is targeted at users aged twelve and above, and that includes any parents or grandparents that want to join in. Now the Lego Company is expanding its production lines to include lights, cameras and so on. Lego Company has done a lot to entertain many children around the world.
Answer: showing the process in different stages
Solution:
The author presents the text by _ .