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 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.

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: Researchers did experiments on kids in order to find out _ .
Why? It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment.

New input: Article: "A messy desk can actually lead people towards clearer thinking", say researchers from Germany. The researchers found in a series of linked studies----using a messy desk and a messy shop front ----that people actually thought more clearly when all around was chaos, as they sought to simplify the tasks at hand. Visual and mental mess forces human beings to focus and think more clearly. Famous thinkers and writers such as Albert Einstein and Roald Dahl have been well-known for their untidy desks. "Messy desks may not be as harmful as they appear to be. As the problem-solving approaches they seem to cause can increase work efficiency or improve employees' creativity in problem-solving," say the authors. "Business and government managers often promote 'clean desk' policies to avoid disorganized offices and messy desks, for the purpose of improving work efficiency and productivity," writes lead researcher Jia Liu from the University of Groningen in a paper published in the Journal of Consumer Research. "This practice is based on the conventional wisdom that a disorganized and messy environment can clutter one's mind and make one's judgments difficult." "However, not all evidence supports this traditional link between a messy environment and a messy mind." The scientists tested people's response in various messy environments----including a messy shop front, a disorganized desk, and even a work environment where a language task "reminded" people of messiness. The authors found in the series of six studies tended towards simplicity in their thinking. "They categorized products in a simpler manner, were willing to pay more for a T-shirt that shows a simple-looking picture, and sought less variety in their choices," said the researchers.
Answer: support the idea that clearer thinking comes from messy environment
Solution:
The author takes Albert Einstein as an example to_.