Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following 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: Researchers did experiments on kids in order to find out _ .
Reason: 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 instance: Article: With the press of a button, a person with severe spinal cord injuiy is able to walk again, thanks to the Walking Assistive Exoskeleton Robot (WAER). Powered suits that could help paralyzed people walk and others lift and carry heavy loads with ease have been a dream since late 19th century. But they can realize their dreams in the 21st century. The 20-kilogram robot has four battery-powered motors that can run for up to three hours. Inventor Wu Chenghua, from Taiwan's Industrial Technology Research Institute, says it has successfully been in tests on 12 patients. "We have learned from our research process that patients whose injuries are below the fourth chest joint are able to use our robot to stand, walk and sit down," he said. Since walking contributes to muscle exercise, Wu says patients receive some additional benefits. "In the clinical process, we would check their bone mineral density ,and we found that the bone mineral densities of these patients had been improved." he said. Wu says his exoskeleton may be available for consumers by 2018. Meanwhile, baggage handlers at Tokyo's Haneda Airport will soon start testing a similar robot, developed by the Japanese firm Cyberdyne. The battery-powered robot weighs only 3 lift a heavy object, the machine monitors the movemen",says Yoshiyuki Sankai, the developer and CEO of Cyberdyne. "This robot suit monitors the signal from the human nerve system to support the waist's movement," Sankai said, "It self-adjusts the level support to reduce the load on the human waist, light and smart. We believe that it will change the life of paralyzed people in many ways and have a promising future."
Answer: improve their bone mineral density
Student:
With the help of WAER, patients will probably_.